12:08 PM - Justin Jackson (Det) was placed on the reserve/retired list Thursday.

1:29 PM - Justin Jackson (Det) signed with the Lions on Saturday.

1:12 PM - Justin Jackson (Det) played six of the Lions' 60 snaps on offense and carried once for two yards while adding an 11-yard reception in Sunday's 20-16 win over the Packers.

4:44 PM - Justin Jackson (Det) (hip) was a full participant during Wednesday's practice.

11:37 AM - Justin Jackson (Det) (hip) is inactive for Sunday's game against the Bears.

3:46 PM - Justin Jackson (Det) was added to the injury report Friday and listed as questionable for Sunday's matchup with Chicago, Tim Twentyman of the Lions' official site reports.

3:08 PM - Justin Jackson (Det) teammate Jamaal Williams is not listed on the injury report in advance of Sunday's game against Chicago.

11:07 AM - Justin Jackson (Det) rushed once for minus-one yard while failing to secure his only target during Saturday's loss to the Panthers.

5:00 PM - Justin Jackson (Det) rushed six times for 16 yards while catching one of two targets for 15 yards during Sunday's 20-17 win over the Jets.

11:43 AM - Justin Jackson (Det) (illness) is active for Sunday's matchup against the Jets.

2:39 PM - Justin Jackson (Det) (illness) is now listed as questionable for Sunday's game against the Jets.

7:14 PM - Justin Jackson (Det) rushed four times for 19 yards and one touchdown while catching his only target for 12 yards during Sunday's win over the Vikings.

3:47 PM - Justin Jackson (Det) rushed once for four yards while catching three of five targets for 19 yards during Sunday's win over ville.

1:27 PM - Justin Jackson (Det) rushed four times for four yards while catching one of two targets for 15 yards during Thursday's loss to the Bills.

6:53 PM - Justin Jackson (Det) rushed nine times for 66 yards and caught his lone target for 11 yards in Sunday's 31-18 win over the Giants.

7:28 PM - Justin Jackson (Det) rushed four times for 14 yards while catching two of three targets for 14 yards during Sunday's 31-30 win over Chicago.

2:26 PM - Justin Jackson (Det) rushed four times for 27 yards during Sunday's 15-9 win over Green Bay.

11:41 AM - Justin Jackson (Det) rushed three times for 14 yards but was unable to secure his only target during Sunday's 29-0 loss to the Patriots.

12:34 PM - Justin Jackson (Det) Lions signed Jackson to their active roster Wednesday, Jeff Risdon of USA Today reports.

12:34 PM - Justin Jackson (Det) Lions signed Jackson to their active roster Wednesday, Jeff Risdon of USA Today reports.

9:03 PM - Justin Jackson (Det) did not log an offensive snap during Sunday's 38-35 loss to the Eagles.

9:03 PM - Justin Jackson (Det) did not log an offensive snap during Sunday's 38-35 loss to the Eagles.

5:30 PM - Justin Jackson (Det) has been elevated to the Lions' active roster for their Week 1 game against the Eagles.

5:30 PM - Justin Jackson (Det) has been elevated to the Lions' active roster for their Week 1 game against the Eagles.

12:31 PM - Justin Jackson () Lions signed Jackson to the practice squad Wednesday, Tim Twentyman of the team's official site reports.

6:34 PM - Justin Jackson () was released by Detroit on Tuesday.

7:53 PM - Justin Jackson (Det) rushed eight times for 44 yards and caught two of two targets for 39 yards during Sunday's 19-9 loss to the Steelers.

1:35 PM - Justin Jackson (Det) coordinator Ben Johnson said that the team wants to "showcase" Jackson during Sunday's preseason finale against the Steelers, Dave Birkett of the Detroit Free Press reports.

4:31 PM - Justin Jackson (Det) rushed seven times for 54 yards in Saturday's 27-26 preseason win over the Colts.

4:15 PM - Justin Jackson (Det) signed a contract with the Lions on Monday.

4:15 PM - Justin Jackson (Det) signed a contract with the Lions on Monday.

1:47 PM - Justin Jackson (LAC) carried the ball three times for 20 yards in Sunday's 35-32 overtime loss to the Raiders. The fourth-year back finished the season with 68 carries and 364 rushing yards to go along with 22 receptions and 178 receiving yards. He also compiled two rushing touchdowns.

3:50 PM - Justin Jackson (LAC) ran 12 times for 41 yards and caught three passes for 20 yards during Sunday's 34-13 win over the Broncos.

5:57 PM - Justin Jackson (LAC) rushed the ball 11 times for 64 yards and two touchdowns in Sunday's 41-29 loss to the Texans. He added eight receptions on nine targets for 98 yards.

2:55 PM - Justin Jackson (LAC) Austin Ekeler having announced on Instagram that he tested positive for COVID-19 again Saturday and won't play Sunday against the Texans, per Ian Rapoport of NFL Network, Jackson is poised for added work in the Chargers' Week 16 backfield.

7:56 PM - Justin Jackson (LAC) ran for 35 yards on nine carries against the Giants on Sunday.

10:48 AM - Justin Jackson (LAC) recorded a season-high six carries for 15 rushing yards while also hauling in two catches for six yards during Sunday's 41-22 win over the Bengals.

3:59 PM - Justin Jackson (LAC) carried the ball once for two yards in Sunday night's 41-37 win over the Steelers.

7:10 PM - Justin Jackson (LAC) (quadriceps) is listed as active Sunday against the Steelers.

5:57 PM - Justin Jackson (LAC) (quad) is listed as questionable for Sunday night's game against the Steelers.

6:37 PM - Justin Jackson (LAC) was a full participant at practice Thursday after nursing a quadriceps injury to open the week.

11:34 PM - Justin Jackson (LAC) (quadriceps) turned in a limited practice Wednesday.

2:51 PM - Justin Jackson (LAC) (quadriceps) is inactive for Sunday's game against the Vikings.

8:54 AM - Justin Jackson (LAC) (quadriceps) has been deemed doubtful ahead of Sunday's game against the Vikings.

8:37 PM - Justin Jackson (LAC) (quadriceps) didn't practice for the Chargers on Wednesday.

4:27 PM - Justin Jackson (LAC) (quadriceps) will not play Sunday against the Eagles, Gilbert Manzano of The Orange County Register reports.

6:36 PM - Justin Jackson (LAC) (quadriceps) did not participate in practice Thursday.

7:31 PM - Justin Jackson (LAC) (quad) didn't practice Wednesday.

10:51 PM - Justin Jackson (LAC) carried the ball three times for 79 yards before leaving Sunday's 27-24 loss to the Patriots with a quad injury. Coach Brandon Staley believes is "day-to-day" with the injury, Fernando Ramirez of Sports Illustrated reports.

6:04 PM - Justin Jackson (LAC) (quadriceps) is questionable to return to Sunday's game against the Patriots.

8:00 AM - Justin Jackson (LAC) (groin) caught his lone target for seven yards in Sunday's 34-6 loss to the Ravens.

4:14 PM - Justin Jackson (LAC) (groin) was not listed on the injury report ahead of Sunday's contest against the Ravens, Jeff Miller of the Los Angeles Times reports.

6:39 PM - Justin Jackson (LAC) (groin) was a limited participant at practice Wednesday.

2:49 PM - Justin Jackson (LAC) (groin) is inactive for Sunday's game against the Browns.

4:44 PM - Justin Jackson (LAC) (groin) is doubtful for Sunday's game against the Browns.

5:36 PM - Justin Jackson (LAC) (groin) didn't practice Thursday, Daniel Popper of The Athletic reports.

6:20 PM - Justin Jackson (LAC) (groin) was listed as limited in Wednesday's walk-though.

2:41 PM - Justin Jackson (LAC) lost four yards on three carries and caught all four of his targets for 17 yards in Monday's 28-14 win over the Raiders.

8:49 PM - Justin Jackson (LAC) rushed twice for no gain in Sunday's 30-24 win over the Chiefs.

10:11 PM - Justin Jackson (LAC) carried the ball four times for 21 yards and also caught his lone target for eight yards in Sunday's 20-17 loss to the Cowboys.

8:18 PM - Justin Jackson (LAC) carried the ball once for five yards and caught his lone target for two yards in Sunday's 20-16 win over Washington.

8:29 PM - Justin Jackson (LAC) (groin) participated in Tuesday's practice, Daniel Popper of The Athletic reports.

5:59 PM - Justin Jackson (LAC) (groin) isn't practicing Tuesday, Daniel Popper of The Athletic reports.

12:42 PM - Justin Jackson (LAC) (groin) is not practicing Friday, Daniel Popper of The Athletic reports.

9:59 PM - Justin Jackson (LAC) was listed as the Chargers' top backup running back on the inaugural 2021 depth chart, Gilbert Manzano of The Orange County Register reports.

11:43 AM - Justin Jackson (LAC) returned to practice Thursday, Daniel Popper of The Athletic reports.

7:00 PM - Justin Jackson (LAC) Chargers placed Jackson on the COVID-19 reserve list Tuesday, Gilbert Manzano of Orange County Register reports.

10:56 AM - Justin Jackson (LAC) faces additional competition for the backup running back job after the Chargers drafted Larry Rountree in the sixth round of the 2021 NFL Draft, Daniel Popper of The Athletic reports.

5:08 PM - Justin Jackson (LAC) tallied just four yards on two carries in the 19-16 win over the Broncos on Sunday.

7:00 PM - Justin Jackson (LAC) (coach's decision) won't suit up in Thursday's game against the Raiders.

1:32 PM - Justin Jackson (LAC) (knee) carried the ball three times for nine yards and caught all three of his targets for 10 yards in Sunday's 20-17 win over the Falcons.

4:56 PM - Justin Jackson (LAC) (knee) was activated from injured reserve Saturday.

7:10 PM - Justin Jackson (LAC) Anthony Lynn said Friday that Jackson (knee) may be activated from IR ahead of Sunday's game versus the Falcons, Jeff Miller of the Los Angeles Times reports.

3:23 PM - Justin Jackson (LAC) Chargers designated Jackson (knee) for return from injured reserve Wednesday, Daniel Popper of Athletic reports.

4:08 PM - Justin Jackson (LAC) Chargers placed Jackson (knee) on injured reserve Saturday.

3:11 PM - Justin Jackson (LAC) (knee) has been ruled out for Sunday's game at Miami.

5:50 PM - Justin Jackson (LAC) (knee) remained sidelined at practice Thursday.

1:39 PM - Justin Jackson (LAC) Anthony Lynn indicated Wednesday that he's leaning toward resting Jackson (knee) at practice this week, Daniel Popper of The Athletic reports.

11:28 AM - Justin Jackson (LAC) never managed to return in Sunday's loss against the Raiders after injuring his knee during the first drive of the game.

5:43 PM - Justin Jackson (LAC) (knee) returned to Sunday's game versus the Raiders, Jeff Miller of the Los Angeles Times reports.

4:27 PM - Justin Jackson (LAC) was forced out of Sunday's game against the Raiders with a knee injury.

9:40 PM - Justin Jackson (LAC) carried the ball 17 times for 89 yards in Week 8 against the Broncos. He added three receptions for 53 yards.

8:09 PM - Justin Jackson (LAC) (knee) rushed five times for 12 yards and caught five of six targets for 43 yards in Sunday's 39-29 win over the Jaguars.

2:58 PM - Justin Jackson (LAC) (knee) is listed as active Sunday against the Jaguars.

3:44 PM - Justin Jackson (LAC) Jackson (knee) practiced fully Friday, he's listed as questionable for Sunday's game against the Jaguars, Gilbert Manzano of The Orange County Register reports.

6:47 PM - Justin Jackson (LAC) (knee) remained limited at practice Thursday.

7:01 PM - Justin Jackson (LAC) (knee) was listed as a limited practice participant Wednesday, Gilbert Manzano of The Orange County Register reports.

11:47 AM - Justin Jackson (LAC) rushed eight times for 13 yards and brought in two targets for 12 yards in Sunday's 38-31 loss to the Buccaneers.

6:53 PM - Justin Jackson (LAC) (quad) practiced fully Wednesday.

2:43 PM - Justin Jackson (LAC) (quadriceps) is inactive for Sunday's contest against the Panthers.

3:44 PM - Justin Jackson (LAC) (quadriceps) is officially listed as doubtful for Sunday's game against the Panthers, Daniel Popper of The Athletic reports.

6:59 PM - Justin Jackson (LAC) (quadriceps) didn't participate in Wednesday's practice.

3:07 PM - Justin Jackson (LAC) (quadriceps) is inactive for Sunday's Week 2 tilt against the Chiefs.

8:14 AM - Justin Jackson (LAC) (quadriceps), who is listed as doubtful for Sunday's game against the Chiefs, isn't expected to play, Adam Schefter of ESPN reports.

3:30 PM - Justin Jackson (LAC) (quadriceps) isn't practicing Friday, Daniel Popper of The Athletic reports.

6:51 PM - Justin Jackson (LAC) (quadriceps) didn't suit up in Thursday's practice.

6:13 PM - Justin Jackson (LAC) (quad) won't practice Wednesday, Gilbert Manzano of The Orange County Register reports.

5:08 PM - Justin Jackson (LAC) Anthony Lynn said Monday that Jackson (quadriceps) is day-to-day, Gilbert Manzano of The Orange County Register reports.

7:06 PM - Justin Jackson (LAC) is ruled out to retake the field Sunday against Cincinnati due to a quad injury.

6:51 PM - Justin Jackson (LAC) (toe) wasn't listed on Wednesday's injury report and will play in Sunday's season opener versus the Bengals.