Minnesota placed Mason on injured reserve after he suffered a thumb injury in Week 1. He will miss at least four games under NFL injured-reserve rules, removing a back who led the Vikings with 15 carries and 59 rushing yards in the opener.
Move Mason to an IR slot where available; Aaron Jones Sr. has the clearest path to a larger share of Minnesota's backfield work while the team replaces depth.
Cooper's MRI produced encouraging results after his Week 1 ankle sprain, but the Jets receiver remains week to week and could miss time. The report's hoped-for return window is within four weeks rather than a confirmed Week 2 availability.
Do not count on Cooper for Week 2 until the Jets provide practice participation or a game-status update.
Walker turned 23 carries into 173 rushing yards and added three catches for 18 yards in Kansas City's Week 1 win over Denver. The workload and two touchdowns give fantasy managers an early, direct signal that he opened the season as the Chiefs' lead back.
Treat Walker as Kansas City's primary weekly starter while monitoring how the backfield split develops in Week 2.
NFL.com's Week 1 log records 24 carries, 144 rushing yards and three touchdowns for Henry in Baltimore's win over Indianapolis.
Henry's 24-carry workload and goal-line production keep him locked in as a high-end RB1. The three touchdowns are not a repeatable weekly target, but the early workload supports his established role.
Sampson did not return after a knee injury. No diagnosis or expected absence beyond this game has been reported.
Monitor Cleveland's postgame report before making waiver or lineup changes; the in-game ruling alone does not establish a multiweek absence.
Kittle was a limited participant Wednesday while managing his Achilles issue. The official practice report confirms he is participating, but it does not settle whether San Francisco will use him without restriction in Week 1.
FFT fantasy impact6/10
Monitor the final practice report and any game designation before treating Kittle's workload as normal.