5:07 PM - Jordan Mason (SF) (ankle) was officially placed on injured reserve Saturday, Adam Schefter of ESPN reports.

7:32 PM - Jordan Mason (SF) (ankle) has been ruled out for Sunday's game against the Bears.

3:42 PM - Jordan Mason (SF) (ankle) did not practice Wednesday, Matt Barrows of The Athletic reports.

4:50 PM - Jordan Mason (SF) 49ers placed Mason (ankle) on injured reserve Monday, Nick Wagoner of ESPN.com reports.

4:31 PM - Jordan Mason (SF) rushed three times for eight yards with one reception (two targets) for five yards in Sunday's 38-10 loss to Green Bay.

3:46 PM - Jordan Mason (SF) took two carries for 13 yards and was not targeted as a receiver in Sunday's 20-17 loss to the Seahawks.

1:43 PM - Jordan Mason (SF) (shoulder) had one carry for five yards in Sunday's 23-20 win over the Buccaneers.

5:19 PM - Jordan Mason (SF) (shoulder) doesn't have an injury designation for Sunday's game in Tampa Bay, Brianna Dix of the Buccaneers' official site reports.

6:48 PM - Jordan Mason (SF) (shoulder) was a limited practice participant Thursday, Nick Wagoner of ESPN.com reports.

4:42 PM - Jordan Mason (SF) Kyle Shanahan said Monday that Mason aggravated his existing shoulder injury in Sunday night's win over the Cowboys and is viewed as day-to-day, Nick Wagoner of ESPN.com reports.

5:51 PM - Jordan Mason (SF) (shoulder) was a full practice participant Friday and doesn't have a designation for Sunday's game against the Cowboys.

6:37 PM - Jordan Mason (SF) (shoulder) practiced in a limited fashion Thursday, Cam Inman of The San Jose Mercury News reports.

4:22 PM - Jordan Mason (SF) Kyle Shanahan said Mason will be limited at Wednesday's practice due to an ankle injury, Cam Inman of The San Jose Mercury News reports.

5:10 PM - Jordan Mason (SF) (shoulder) doesn't have an injury designation for Sunday's game against the Chiefs, Matt Barrows of The Athletic reports.

4:22 PM - Jordan Mason (SF) (shoulder) is practicing in a non-contact jersey Friday, Nick Wagoner of ESPN.com reports.

6:23 PM - Jordan Mason (SF) (shoulder) practiced in a limited capacity Thursday, Matt Maiocco of NBC Sports Bay Area reports.

4:10 PM - Jordan Mason (SF) Kyle Shanahan said Mason (shoulder) will be limited in practice Wednesday, Matt Barrows of The Athletic reports.

5:33 PM - Jordan Mason (SF) (shoulder) sported a non-contact jersey during Monday's practice, Cam Inman of The San Jose Mercury News reports.

3:14 PM - Jordan Mason (SF) Kyle Shanahan confirmed Friday that Mason suffered an AC joint sprain in his left shoulder during Thursday's 36-24 win at Seattle and is considered day-to-day, Eric Branch of the San Francisco Chronicle reports.

11:47 AM - Jordan Mason (SF) (shoulder) is believed to have a sprained AC joint but will undergo further testing Friday, Adam Schefter of ESPN reports.

7:53 PM - Jordan Mason (SF) rattled off 24 carries for 123 yards and a touchdown while adding 37 receiving yards on two receptions (three targets) in Sunday's 30-13 win over New England.

5:01 PM - Jordan Mason (SF) took 20 carries for 100 yards and a rushing touchdown while bringing in his lone target for four yards in Sunday's 23-17 loss to Minnesota.

1:41 PM - Jordan Mason (SF) teammate Christian McCaffrey was placed on IR on Saturday due to an Achilles/calf injury.

5:31 PM - Jordan Mason (SF) is slated to serve as the 49ers' No. 1 running back Sunday at Minnesota and beyond with the news that Christian McCaffrey (calf/Achilles) is a candidate for injured reserve, Matt Barrows of The Athletic reports.

7:02 PM - Jordan Mason (SF) is slated to be the 49ers' starting running back Monday versus the Jets with Christian McCaffrey (calf/Achilles) inactive for the contest, Nick Wagoner of ESPN.com reports.

6:06 PM - Jordan Mason (SF) backfield mate Elijah Mitchell (undisclosed) was placed on season-ending injured reserve Tuesday, David Lombardi of The Athletic reports.

5:56 PM - Jordan Mason (SF) (hip) is participating in Wednesday's practice, Nick Wagoner of ESPN.com reports.

11:31 AM - Jordan Mason (SF) is getting regular first-team reps while Christian McCaffrey (calf) and Elijah Mitchell (hamstring) recover from injuries, Matt Maiocco of NBC Sports Bay Area reports.

11:20 AM - Jordan Mason (SF) has made a strong impression on coach Kyle Shanahan this summer and could challenge Elijah Mitchell for the No. 2 RB role, Jordan Elliott of NBC Sports Bay Area reports.

7:03 PM - Jordan Mason (SF) took six carries for 36 yards and caught his only target for 12 yards in Sunday's 21-20 loss to the Rams.

11:22 AM - Jordan Mason (SF) could get significant playing time at running back Sunday against the Rams, Matt Barrows of The Athletic reports.

4:02 PM - Jordan Mason (SF) had two carries for three yards and was not targeted as a receiver in Sunday's 27-10 win over Washington.

11:49 AM - Jordan Mason (SF) (illness) is active for Sunday's game against the Commanders.

6:04 PM - Jordan Mason (SF) (illness) is listed as questionable for Sunday's game against the Commanders.

2:02 PM - Jordan Mason (SF) did not see the field on offense Monday, finishing with 12 snaps on special teams in the 33-19 loss to Baltimore.

3:51 PM - Jordan Mason (SF) had five rushing attempts for 20 yards and wasn't targeted as a receiver in Sunday's 45-29 win over Arizona.

3:17 PM - Jordan Mason (SF) had four carries for 20 yards and a touchdown and a reception of six yards in Sunday's 28-16 win over the Seahawks.

2:51 PM - Jordan Mason (SF) is in line to serve as the No. 2 running back for Sunday's Week 14 game against the Seahawks with Elijah Mitchell (knee) ruled inactive for the contest.

3:16 PM - Jordan Mason (SF) (hamstring) is active Sunday against the Eagles.

4:10 PM - Jordan Mason (SF) (hamstring) is listed as questionable for Sunday's game against the Eagles, Nick Wagoner of ESPN.com reports.

2:52 PM - Jordan Mason (SF) missed Wednesday's practice with a hamstring injury, Matt Barrows of The Athletic reports.

4:56 PM - Jordan Mason (SF) did not see the field on offense while logging 11 snaps on special teams in Monday's 22-17 loss to the Vikings.

4:44 PM - Jordan Mason (SF) rushed five times for 27 yards and a touchdown but wasn't targeted in Sunday's 19-17 loss to the Browns.

7:19 PM - Jordan Mason (SF) rushed 10 times for 69 yards and a touchdown in Sunday's 42-10 win over the Cowboys. He failed to bring in his lone target as a receiver.

4:24 PM - Jordan Mason (SF) rushed three times for 10 yards and caught his lone target for 13 yards in Sunday's 35-16 win over Arizona.

10:17 AM - Jordan Mason (SF) is in line to serve as the 49ers' No. 2 running back Sunday against the Cardinals with Elijah Mitchell (knee) listed as questionable but not expected to be active for the contest, David Lombardi of The Athletic reports.

3:59 PM - Jordan Mason (SF) (foot) was removed from the injury report and will play in Sunday's opener against the Steelers, Nick Wagoner of ESPN.com reports.

4:09 AM - Jordan Mason (SF) rushed eight times for 28 yards and was not targeted as a receiver in Sunday's 38-13 win over Arizona.

10:39 PM - Jordan Mason (SF) (hamstring) rushed two times for 13 yards and a touchdown in Sunday's 37-34 win over Las Vegas.

4:47 PM - Jordan Mason (SF) (hamstring) doesn't have an injury designation for Sunday's game against the Raiders, Jennifer Lee Chan of NBC Sports Bay Area reports.

7:14 PM - Jordan Mason (SF) (hamstring) practiced in a limited fashion Thursday, Eric Branch of the San Francisco Chronicle reports.

7:10 PM - Jordan Mason (SF) (hamstring) was limited at Wednesday's practice, Eric Branch of the San Francisco Chronicle reports.

3:18 PM - Jordan Mason (SF) head coach Kyle Shanahan said Monday that Mason is "doing great" in his recovery from a tight hamstring, per David Lombardi of The Athletic.

7:32 PM - Jordan Mason (SF) (hamstring) was active in Saturday's 37-20 win over the Commanders, but he did not receive a carry and only logged snaps on special teams.

2:43 PM - Jordan Mason (SF) (hamstring) is listed as active Saturday against the Commanders, Matt Barrows of The Athletic reports.

6:10 PM - Jordan Mason (SF) (hamstring) is listed as questionable for Saturday's contest versus the Commanders, Nick Wagoner of ESPN.com reports.

3:47 PM - Jordan Mason (SF) rushed four times for 64 yards in Thursday's 21-13 win over the Seahawks.

9:02 PM - Jordan Mason (SF) rushed 11 times for 56 yards and was not targeted in Sunday's 35-7 win over the Buccaneers.

9:58 PM - Jordan Mason (SF) rushed eight times for 51 yards in Sunday's 33-17 win over the Dolphins.