After three seasons with the Bills, Lynch was traded to the Seattle Seahawks mid-way through the 2010 season. With Seattle, he led the league in rushing touchdowns twice, made four Pro Bowls and won Super Bowl XLVIII against the Denver Broncos. After initially retiring after the 2015 season, Lynch applied for reinstatement and was traded to the Oakland Raiders in April 2017, with whom he played two seasons before effectively retiring again, despite not filing retirement paperwork with the league. In December 2019, Lynch came out of retirement a second time to join the Seattle Seahawks for a second stint with a contract only for the remaining week of the season and the postseason. Lynch earned the nickname "Beast Mode" for his powerful running style and consistent ability to run over defenders and break tackles.