Analysis

Mason saw one less snap on offense than he did a week prior for Christian McCaffrey's return to the lineup, but the backup wound up receiving one additional carry against the Seahawks. The 25-year-old Mason also muffed a kickoff return attempt that careened off his chest, but the long-time special teams gunner fixed his own faux pas by diving to swat the ball out of bounds before Seattle could gain possession. In the scope of fantasy football, Mason's current role spelling CMC for a play or two does not carry much value heading into next Sunday's road tilt against Green Bay.

Analysis

Mason was able to recover from a shoulder injury over San Francisco's bye week in order to suit up against Tampa Bay. Unfortunately for fantasy managers, the first-half star was relegated to his usual backup role with Christian McCaffrey (Achilles) making his season debut off of injured reserve. This resulted in Mason assuming his regular low-usage role Sunday, a trend that should continue now that McCaffrey is back atop the depth chart. Mason can safely be dropped in standard formats as we look towards Week 11.

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 running back 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.

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.

Analysis

Mason initially sprained 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 joined in the backfield by Christian McCaffrey (Achilles), 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.

Analysis

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 (Achilles) trending toward a return from injured reserve after the 49ers' Week 9 bye, Mason's days as San Francisco's lead back appear to be either numbered or over.

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.

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.

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.