Mr. Everything: Veteran safety Quandre Diggs was the only defensive back in the NFL last year to finish with at least 75 tackles, three interceptions, three tackles for loss and one pick-six. He's played both safety spots and both inside and outside cornerback during his career. He was a quarterback in high school. During Thursday's first practice of training camp, he was also among a group of players that included Jamal Agnew, Danny Amendola, Brandon Powell and Tom Kennedy returning punts. Is there anything Diggs can't do on the football field? – Tim Twentyman
Tavai fitting in: Jahlani Tavai looked at home with the starting linebackers in the offseason workouts, and he was just as comfortable at the start of training camp. The second-round draft pick from Hawaii worked with the No. 1 unit. The way he communicated with teammates between plays showed that he was not out of place. – Mike O'Hara
Playmaking rookie: Rookie first-round pick T.J. Hockenson made a few nice plays in his training camp debut. The team's No. 1 pick this past April snuck behind the linebackers and caught a touchdown in the back of the end zone in the last rep of a goal line passing drill that forced the defense to do pushups. Later, in 7-on-7's, he made a leaping catch in the corner of the end zone and was able to get both feet in bounds for a touchdown. – Tim Twentyman
Center of attention: Frank Ragnow was at center from the first snap. We can end any speculation of whether the move to center from left guard – where he started all 16 games last season as a rookie – was an offseason experiment. – Mike O'Hara
First five: Speaking of the offensive line, there are a lot of question marks about the starting left guard spot this camp. As expected, the five linemen with the first-team unit Thursday were Taylor Decker, Kenny Wiggins, Frank Ragnow, Graham Glasgow and Rick Wagner. We'll see if things change Friday. – Tim Twentyman
View photos from Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage.
A young fan checks out his face paint before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans take a photo with Roary and the Detroit Lions Cheerleaders before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans take a photo by the giant Lions letters before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans play miniature golf before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
A fan tests his strength before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans wait for their balloon animals before Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia smiles during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) and the offensive huddle during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) catches some extra passes following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johnson (33) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Andy Jones (17) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions safety Tavon Wilson (32) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions punter Sam Martin (6) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans watch Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive coordinator Paul Pasqualoni during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Romeo Okwara (95) and Detroit Lions defensive tackle John Atkins (99) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Taylor Decker (68) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver coach Robert Prince during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive lineman Frank Ragnow (77) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive lineman Frank Ragnow (77) and Detroit Lions center/guard Graham Glasgow (60) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Rick Wagner (71) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johnson (33) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive coordinator Darrell Bevell during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Rick Wagner (71) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions punter Sam Martin (6) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive coordinator Paul Pasqualoni during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions fullback Nick Bawden (46) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johnson (33) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) and Detroit Lions wide receiver Kenny Golladay (19) talk after a rep during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive back Quandre Diggs (28) and the defense during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) and Detroit Lions quarterback Matthew Stafford (9) talk after a rep during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive back Quandre Diggs (28) fields a punt during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions safety Tavon Wilson (32) and Detroit Lions linebacker Jarrad Davis (40) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tight end Isaac Nauta (89) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Fans watch Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive coordinator Darrell Bevell during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia and Detroit Lions safety Tavon Wilson (32) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback David Fales (8) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Tom Savage (3) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Rashaan Melvin (29) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions linebacker Jarrad Davis (40) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive lineman Tyrell Crosby (65) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions linebacker Devon Kennard (42) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Rick Wagner (71) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) wears Lions socks during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive lineman Frank Ragnow (77) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Ty Johnson (38) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Zach Zenner (34) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Tom Savage (3) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions team president Rod Wood during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) points during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions long snapper Don Muhlbach (48) during Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Darius Slay (23) signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) catches extra passes following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive back Quandre Diggs (28) signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia talks to the Troy Athens High School Football Team following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Trey Flowers (90) signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Danny Amendola (80) catches some extra passes following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions center/guard Graham Glasgow (60) and Detroit Lions tackle Taylor Decker (68) walk off the field following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia talks to the Troy Athens High School Football Team following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia signs autographs following Day 1 of 2019 Detroit Lions Training Camp presented by Rocket Mortgage on Thursday, July 25, 2019 in Allen Park, Mich. (Detroit Lions via AP)
Rookie debut: Fourth-round draft pick Austin Bryant of Clemson did not participate in offseason drills while recovering from an injury, but he looked comfortable doing drills Thursday – including dropping back in coverage. – Mike O'Hara
Sitting trio: The first practice of training camp took place without defensive end Trey Flowers (PUP), cornerback Darius Slay (NFI) and defensive tackle Damon Harrison Sr. (NFI) on the field. All three were standing together chatting off to the side at the beginning of practice. It was a lot of defensive firepower in one trio. Those guys are arguably Detroit's top three defenders. It will be hard to evaluate Detroit's defense until all three get between the lines. – Tim Twentyman
