George Siaosi Mariner (born January 25, 1997) is an American professional football wide receiver. He played college football at Utah and Utah State. He has been a member of the Las Vegas Raiders and Baltimore Ravens of the National Football League (NFL), the Michigan Panthers of the United Football League (UFL), and the Ottawa Redblacks and Saskatchewan Roughriders of the Canadian Football League (CFL).
Early life George Siaosi Mariner played high school football at Tustin High School in Tustin, California, as a cornerback and wide receiver. He earned second team MaxPreps all-state honors at cornerback in 2014. He also played basketball in high school.
College career Utah Mariner played college football at Utah from 2016 to 2018 as a wide receiver. He redshirted in 2015.
He played in 13 games, starting seven, in 2016, recording 15 receptions for 183 yards and two touchdowns. He appeared in 11 games, starting 10, in 2017, catching 20 passes for 320 yards and one touchdown. Mariner played in 12 games, starting five, in 2018, totaling 17 receptions for 209 yards and one touchdown.
Utah State Mariner transferred to play at Utah State in 2019. He started 13 games in 2019, catching 63 passes for 987 yards and 10 touchdowns, earning second team all-Mountain West Conference honors.
Statistics Season Team Games Receiving GP GS Rec Yds Avg TD 2015 Utah Redshirted 2016 Utah 13 6 15 183 12.2 2 2017 Utah 11 10 20 393 19.7 1 2018 Utah 12 5 17 209 12.3 1 2019 Utah State 13 13 63 987 15.7 10 Career 49 34 115 1,772 15.4 14
Professional career Las Vegas Raiders Mariner signed with the Las Vegas Raiders of the National Football League (NFL) on May 7, 2020, after going undrafted in the 2020 NFL draft. He was released by the Raiders on July 31, 2020.
Baltimore Ravens Mariner was signed by the Baltimore Ravens of the NFL on August 9, 2021. He was released on August 30, 2021.
Ottawa Redblacks Mariner signed with the Ottawa Redblacks of the Canadian Football League (CFL) on January 21, 2022. He was moved to the practice roster on June 5 and promoted to the active roster on October 13, 2022. He played in three games, all starts, for the Redblacks in 2022, catching eight passes for 98 yards and one touchdown. Mariner began the 2023 season on injured reserve but was upgraded to the active roster after the Redblacks cut Quan Bray on June 29, 2023. He moved between the active roster and single game injury list (healthy scratch) several times during the 2023 season. He dressed in 13 games, starting nine, in 2023, recording 18 receptions for 219 yards and one touchdown. He became a free agent after the season.
Michigan Panthers On April 4, 2024, Mariner signed with the Michigan Panthers of the United Football League (UFL). He re-signed with the team on August 13. On April 26, 2025, Mariner had his first 100-yard game against the St. Louis Battlehawks. He finished the game with six catches for 111 yards.
Saskatchewan Roughriders On October 21, 2025, Mariner signed with the Saskatchewan Roughriders of the CFL. He signed a contract extension with the team on January 2, 2026, after spending the remainder of the 2025 season on the club's practice roster.
Mariner was part of a final round of roster cuts made by the Roughriders ahead of the 2026 season on May 30, 2026.
Career statistics
CFL regular season Season Team Games Receiving GP GS Rec Yds Avg TD 2022 OTT 3 3 8 98 12.3 1 2023 OTT 13 9 18 219 12.2 1 Career 16 12 26 317 12.2 2
UFL regular season Season Team Games Receiving GP GS Rec Yds Avg TD 2024 MICH 7 4 27 346 12.8 2 2025 MICH 10 9 31 528 17.0 1 Career 17 13 58 874 15.1 3
UFL postseason Season Team Games Receiving GP GS Rec Yds Avg TD 2024 MICH 1 0 4 60 15.0 1 2025 MICH 0 0 0 0 0.0 0 Career 1 0 4 60 15.0 1
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