Marshawn Lynch officially exited the NFL Thursday. / Drew McKenzie, Sportspress Northwest file.

The Seahawks Thursday finally made it official, placing running back Marshawn Lynch on the NFL’s reserve/retired list. The move is nearly three months after Lynch announced that he would not return via a tweet and photo during the fourth quarter of Super Bowl 50.

Lynch entered the NFL as the 12^th overall pick by the Buffalo Bills in the 2007 draft out of the University of California and was traded to the Seahawks Oct. 5, 2010 for Seattle’s 2011 fourth-round pick (#122, T Chris Hairston) and 2012 fifth-round pick (#147, LB Tank Carder).

Lynch started 77 of the 82 games he played for Seattle and finished his Seahawks career ranking fourth in rushing attempts (1,457), second in rushing touchdowns (57), fourth in rushing yards (6,347) and third in total touchdowns (65).

In nine seasons, Lynch started 114 of 127 games, rushing 2,144 times for 9,112 yards and 74 touchdowns. He added 252 receptions for 1,979 yards and nine touchdowns.

In 11 playoff games during his Seattle tenure, Lynch ran for 937 yards and nine TDs, none more famous than his 67-yard “Beast Quake” touchdown against the New Orleans Saints in a 2010 wild card game against the New Orleans Saints.

Lynch ran for 100 or more yards 25 times as a Seahawk during regular-season games and added six more in the playoffs. He had a career-high 148 yards in a 31-14 win over Philadelphia Dec. 1, 2011.

Lynch tallied a career-high four touchdowns against the New York Giants Nov. 9, 2014, and three touchdowns in a game twice, Dec. 5, 2010, in a 31-14 win over Carolina and Dec. 9, 2012 in a 58-0 blowout of Arizona.

Lynch’s retirement means the Seahawks will have an additional $6.5 million in cap space in 2016. Lynch retired with two years remaining on his contract. The Seahawks have chosen to take his $5 million dead money cap hit this season rather than spread it over two seasons.

The Seahawks used three of their 10 selections in thedraft the past weekend on running backs.