Saskatchewan Roughriders bring back receiver Siaosi Mariner

The Saskatchewan Roughriders have brought back American receiver Siaosi Mariner.

The 28-year-old had a stint on Saskatchewan’s practice roster during the 2025 season but didn’t dress for any regular-season games. He played for the Ottawa Redblacks in 2022 and 2023, catching 26 passes for 317 yards and two touchdowns over 16 contests.

The native of Tustin, Calif. recently played for the Michigan Panthers of the UFL where he led the league with 527 receiving yards in 2025.

The six-foot-one, 190-pound target was a member of Las Vegas Raiders and Baltimore Ravens prior to signing his first CFL contract, though he did not see regular-season action with either team.

Mariner was a collegiate standout at Utah State where he caught 63 passes for 987 yards and 10 touchdowns in 13 games in 2019 to be named second-team All-Mountain West Conference.

The Saskatchewan Roughriders finished first in the West Division standings in 2025 with a 12-6 record, finishing first in the West Division for the first time since 2019. The team went on to defeat the Montreal Alouettes in the 112th Grey Cup in Winnipeg, marking the team’s first championship in 12 years. Trevor Harris went 11-5 as a starter, throwing for 4,549 yards, 24 touchdowns, and 11 interceptions.

The Roughriders ranked second in net offence, second in net defence, and tied for third with a turnover differential of plus-eight. The club’s leading rusher was A.J. Ouellette with 1,222 yards, leading receiver was KeeSean Johnson with 1,159 yards, and leading tackler was A.J. Allen with 91 tackles. Saskatchewan finished second in attendance with average crowds of 28,427, which was a 2.7 percent increase from the previous year.