Center down: Starting center Graham Glasgow got his left leg rolled up on during a team period against the Giants' defense in joint practice Tuesday, and was down on the field for several minutes. He walked off the field gingerly under his own power, and was later spotted walking into the Lions practice facility for further evaluation. No update has been given on his status. Veteran Wesley Johnson replaced Glasgow at center with the first-team offense for the rest of practice. – Tim Twentyman
OBJ, in the swing: Giants receiver Odell Beckham Jr. slipped a couple times making cuts during individual drills at the start of practice. On one play, his cleats dug up a piece of the turf, like a golf divot. In fact, Beckham acted like that's what happened. He tapped the turf back in place, then took an imaginary golf swing. Down the middle, no doubt. – Mike O'Hara
Two-minute magic: Toward the end of practice, each first-team unit got an opportunity to run a two-minute drill with the goal to score a touchdown. The Lions won both periods. Quarterback Matthew Stafford hit Marvin Jones Jr. for a touchdown to win the period for the Lions' offense against the Giants' defense. Safety Glover Quin won it for the Lions' defense a few minutes later when he stepped in front of an Eli Manning pass. – Tim Twentyman
Riddick's role: Theo Riddick is best known as one of the NFL's top receiving backs, but he is highly regarded among teammates for his overall awareness on offense. He showed it on a pass play, when he lined up in the backfield and stoned a Giants' pass rusher with a block to give Jake Rudock time to throw a pass. – Mike O'Hara
No Saquon: One of the most anticipated parts of these joint practices, besides seeing the matchup between Lions cornerback Darius Slay and Beckham, was getting an up-close look at Giants rookie and second overall draft pick running back Saquon Barkley. Unfortunately, Barkley tweaked a hamstring at Giants practice Monday, and didn't take part in the joint practices. His status for the rest of the week and for Friday's preseason game still seems up in the air. Too bad for Detroit fans and the Lions' defense, who could have used some good work against a back of that caliber. – Tim Twentyman
Killebrew stays put: Miles Killebrew's move to linebacker from safety, where he played his first two seasons with the Lions, does not look like a one-week experiment. The position switch was made last week when the Lions practiced against the Raiders, and Killebrew is still at linebacker this week. On one play he lined up to the right of the defensive end in a stand-up pass-rush stance. –Mike O'Hara
View photos from Day 13 of 2018 Detroit Lions Training Camp presented by Rocket Mortgage.
Detroit Lions cornerback DeShawn Shead (26) walks out to training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Ameer Abdullah (21) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions fullback Nick Bellore (43) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Zach Zenner (34) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johnson (33) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions fan during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johnson (33) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Golden Tate (15) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back LeGarrette Blount (29) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Golden Tate (15) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Jace Billingsley (16) makes a one-handed catch during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matt Cassel (8) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Jace Billingsley (16) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matt Cassel (8) hands the ball off during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Darius Slay (23) covers New York Giants wide receiver Odell Beckham Jr. (13) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Teo Redding (10) catches a touchdown pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Teo Redding (10) catches a touchdown pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Nevin Lawson (24) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Brandon Powell (1) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Teo Redding (10) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Zach Zenner(34) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Taylor Decker (68) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Anthony Zettel (69) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions fans during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions linebacker Trevor Bates (53) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tight end Luke Willson (82) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive back Quandre Diggs (28) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Theo Riddick (25) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) catches a pass through traffic during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia talks with defensive back Quandre Diggs (28) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive tackle A'Shawn Robinson (91) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions safety Tracy Walker (47) and cornerback DeShawn Shead (26) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Kerryon Johson (33) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Cornelius Washington (90) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offense during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions linebacker Johnathan Freeny (55) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Anthony Zettel (69) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive end Cornelius Washington (90) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) catches a touchdown pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Marvin Jones Jr. (11) catches a touchdown pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions fans during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions long snapper Don Muhlbach (48) gets ready to snap during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions safety Glover Quin (27) intercepts a pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions safety Glover Quin (27) intercepts a pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions punter Sam Martin (6) holds for kicker Matt Prater (5) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive back Quandre Diggs (28) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Matthew Stafford (9) and wide receiver Golden Tate (15) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions tackle Brian Mihalik (72) and offensive lineman John Montelus (64) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back Zach Zenner (34) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defense during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Darius Slay (23) covers New York Giants wide receiver Odell Beckham Jr. (13) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions offensive lineman Tyrell Crosby (65) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions head coach Matt Patricia during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Kenny Golladay (19) catches a touchdown pass during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions defensive tackle Jeremiah Ledbetter (98) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) hands the ball off during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions quarterback Jake Rudock (14) hands the ball off during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions cornerback Jamal Agnew (39) returns a punt during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions punter Sam Martin (6) during training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions running back LeGarrette Blount (29) spends time with his family following training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Detroit Lions wide receiver Golden Tate (15) spends time with his family following training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
A young fan tries out the vertical jump during Detroit Lions training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
A young fan gets his face painted during Detroit Lions training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
A young fan tries out the vertical jump during Detroit Lions training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
A fan tries out the broad jump during Detroit Lions training camp practice on Tuesday, Aug. 14, 2018 in Allen Park, Mich. (Detroit Lions via AP)
Lawson's reps: For the second straight day, veteran Nevin Lawson manned the outside cornerback spot opposite Slay with the first-team defense. DeShawn Shead got a lot of run in that spot early in camp. That's shaping up to be one of the better position competitions in camp, and the Lions appear to be giving all involved an equal opportunity to win it. – Tim Twentyman
Sticking with cornerbacks: Undrafted rookie Chris Jones out of Nebraska is earning himself more playing time. He got some run with the second-team defense on Tuesday. Jones has been steady throughout camp, and head coach Matt Patricia has complimented Jones (6-0, 200) on his mental approach to the meeting room and the practice field. Jones also has the kind of length the Lions like at the position. – Tim Twentyman
Going up high: One of the greatest attributes to Kenny Golladay's game is his catch radius at 6-foot-4. He showed it off Tuesday in a 5-on-7 drill against the defense. Stafford initially couldn't find an open receiver, moved slightly to his left, and fired a pass high to the back of the end zone that Golladay simply went up and snatched over defenders. – Tim Twentyman
