The Seattle Seahawks shook the NFL landscape on Monday. Following season-ending injuries to their two top tailbacks Chris Carson (hip) and Rashaad Penny (ACL). They brought back Beast Mode, signing the 33-year-old Marshawn Lynch out of retirement. The Seahawks' next opponent, the San Francisco 49ers, react.

The now-re-signed Seahawks legend will undoubtedly play a part in Week 17's bout between the two NFC West teams. The game is a crucial one that will decide the winner of the division; the winner may get themselves a first-round bye in the playoffs.

San Francisco's quarterback Jimmy Garoppolo reacts to the division-altering move. Like most, he was surprised.

I was kind of surprised by it. Guy is a hell of a player. He was unreal when he was playing. We’ll see what he’s got.” Garoppolo recently said, via Mike Florio of Pro Football Talk.

The Niners probably don't have too much to worry about. Lynch hasn't played NFL football all season long, and getting into game shape tends to take more than a week of practice. Lynch will probably be forced to split snaps with fellow new/former Seahawks back, Robert Turbin.

Although both the Seahawks and 49ers have clinched playoff spots, the upcoming contest remains extremely important. If the Niners win, a first-round bye and home-field advantage throughout the playoffs is secured. If they lose and the Green Bay Packers and New Orleans Saints both win, neither NFC West team will get a first-round bye.

Seattle needs a win to get out of the fifth seed and into at least one home game.