Who Should I Start? Alexander Mattison or Trey Sermon

Thursday, March 13, 9:35 PM

Former Las Vegas Raiders running back Alexander Mattison is signing an undisclosed deal on Thursday with the Miami Dolphins, sources told FOX Sports' Jordan Schultz. Earlier in the day, former Dolphins RB Raheem Mostert signed with the Raiders in free agency. The 26-year-old Mattison joined the Raiders in 2024 after spending his first five years in the NFL with the Minnesota Vikings. He eventually took over the lead-back role from a disappointing Zamir White and carried the ball 132 times for 420 yards and four touchdowns (a career-low 3.2 yards per tote) in 14 games (seven starts), adding a career-high 36 catches for 294 yards and another score. Mattison's move to Miami is a big downgrade, as he'll merely be competing for a change-of-pace role with Jaylen Wright behind unquestioned starter De'Von Achane. He'll be avoidable in most fantasy drafts this fall.

Sunday, May 11, 1:38 PM

The Pittsburgh Steelers signed free-agent running back Trey Sermon to an undisclosed one-year deal on Sunday, sources told FOX Sports' Jordan Schultz. Sermon will head to the AFC North after spending the last two seasons with the Indianapolis Colts as a backup to Jonathan Taylor, where he saw 91 carries for 319 yards (3.5 yards per carry) and two touchdowns on the ground in 31 games (three starts). He added 19 receptions on 25 targets for 112 yards through the air. The 26-year-old former third-rounder (88th overall) by the San Francisco 49ers in 2021 out of Ohio State will now join a crowded backfield in Pittsburgh that includes rookie third-rounder Kaleb Johnson, Jaylen Warren and free-agent acquisition Kenneth Gainwell. Sermon only averaged 2.8 yards a carry in 2024 and will likely need an injury or two to resurface on the fantasy radar in the Steel City.