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

EDGE Analysis

Coming out of a bye week, Mason was a full practice participant Wednesday and Friday, sandwiched around a limited session Thursday. His time as a prime fantasy asset nonetheless seems to be nearing an end, with coach Kyle Shanahan saying Friday that only an unexpected late setback would prevent RB Christian McCaffrey (Achilles) from playing this Sunday. Mason may still get some snaps and touches but won't dominate carries the way he did for much of the past two months.

Mason (shoulder) was a limited practice participant Thursday, Nick Wagoner of ESPN.com reports.

EDGE Analysis

Mason handled every practice rep Wednesday, but the 49ers typically go through a more rigorous session Thursday, so his downgrade shouldn't be cause for concern. Indeed, he was seen wearing a non-contact jersey in the latter practice, per Nick Wagoner of ESPN.com, indicating the team still is managing his lingering shoulder issue. Both Mason and Christian McCaffrey (IR, Achilles) were limited Thursday, so the situation bears watching to see if McCaffrey finally makes his season debut Sunday in Tampa Bay, or if Mason continues to be San Francisco's lead runner.

Mason (shoulder) practiced in full Wednesday.

EDGE Analysis

Mason initially strained his left shoulder Week 6 at Seattle, but he paced the backfield Week 7 against the Chiefs before aggravating the issue Week 8 versus the Cowboys. With a bye week to heal up, he's back to full health, but he's also going to be welcoming Christian McCaffrey (IR, Achilles) to the backfield, perhaps as soon as Sunday's game in Tampa Bay. If that comes to pass, Mason will take a back seat to McCaffrey at running back for the 49ers.

Coach 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.

EDGE Analysis

After Sunday night's win, Shanahan said Mason could have returned to the game after he went to the locker room just before halftime. Mason, however, never played another snap, as Isaac Guerendo handled backfield duties the rest of the way. With Christian McCaffrey (IR, Achilles/calf) expected back after the Week 9 bye, Mason's days as San Francisco's lead back appear to be either numbered or over.

Coach Kyle Shanahan indicated after Sunday's 30-24 win over the Cowboys that Mason (shoulder) could have come back into the game if necessary, Matt Maiocco of NBC Sports reports.

EDGE Analysis

Mason was deemed questionable to return after a first-half shoulder injury. He was never officially ruled out but watched Isaac Guerendo handle 14 carries for 85 yards and a touchdown. Mason will have some extra recovery time with the 49ers on bye in Week 9 before traveling to Tampa Bay for Week 10.

Mason (shoulder) is questionable to return to Sunday's game against the Cowboys.

EDGE Analysis

Mason stayed down after a first-quarter run, checked back into the game but subsequently went to the locker room after rushing six times for 18 yards. He had been playing through an AC joint sprain in his shoulder that he suffered in Week 6 against the Seahawks, so this is presumably an aggravation of that injury. Isaac Guerendo will lead San Francisco's backfield if Mason's unable to return Sunday.

Mason (shoulder) was a full practice participant Friday and doesn't have a designation for Sunday's game against the Cowboys.

EDGE Analysis

Mason was nursing an AC joint sprain in his left shoulder coming into last week's game against the Chiefs, but it didn't stop him from handling a season-high snap share (86 percent) while finishing with 14 carries for 58 yards and two receptions for 11 yards in the 28-18 loss. Despite seemingly coming out of that game with no setbacks, the 49ers have still chose to lighten Mason's practice workload this week, as he was a limited participant Wednesday and Thursday before ditching his blue no-contact jersey and logging full reps Friday, per Matt Barrows of The Athletic. Mason thus looks to be in the clear for another turn as the 49ers' lead back in what could be his final start, as head coach Kyle Shanahan previously said that Christian McCaffrey (Achilles) could be ready to return from injured reserve following San Francisco's Week 9 bye.

Mason (shoulder) practiced in a limited fashion Thursday, Cam Inman of The San Jose Mercury News reports.

EDGE Analysis

For a second session in a row to begin Week 8 prep, Mason is handling a reduced workload due to a lingering shoulder issue, giving him just one more opportunity to get back to full participation Friday ahead of Sunday's contest against the Cowboys. Assuming he's cleared to play this weekend -- either on Friday's injury report or 90 minutes before an 8:20 p.m. ET kickoff -- he'll serve as the 49ers' lead runner for an eighth consecutive game in place of Christian McCaffrey (Achilles), who may return following the team's Week 9 bye.

Coach 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.

EDGE Analysis

Mason previously was tending to an AC joint sprain in his left shoulder that he sustained Thursday, Oct. 10 against the Seahawks, but it didn't stop him from dominating the 49ers backfield this past Sunday versus the Chiefs to the tune of 14 carries for 58 yards and two catches (on two targets) for 11 yards on an 86 percent snap share. Despite having a new health concern this week, Mason's ability to handle some reps to kick off Week 8 prep is a decent sign that his availability for Sunday's game against the Cowboys isn't in peril. Shanahan said Monday that Christian McCaffrey (Achilles) isn't expected to be available until after the 49ers' Week 9 bye, so Mason is lined up to be the team's primary runner for at least one more contest, assuming he's available this weekend.

Mason rushed 14 times for 58 yards and caught both of his targets for 11 yards in Sunday's 28-18 loss to the Chiefs.

EDGE Analysis

Mason suffered a sprained AC joint in the 49ers' win over the Seahawks on Oct. 9, but the extended rest between that contest and Sunday's allowed San Francisco's starting tailback to suit up without restrictions against the Chiefs. The 25-year-old averaged 4.1 yards per carry in the loss, falling victim to a poor game script en route to a modest fantasy line. Quarterback Brock Purdy vultured both of San Francisco's rushing scores Sunday, but Mason operated as the primary back with backup Isaac Guerendo receiving just one carry in the loss. Christian McCaffrey (Achilles) is nearing a return from injury, so make sure to monitor the superstar's status ahead of next Sunday's tilt against the Cowboys, as his return would effectively eliminate Mason's massive fantasy value. For now, we will assume the latter will lead San Francisco's rushing attack against Dallas in Week 8.