Photo by SBNationSidney Rice, a key member of the Seattle Seahawks’ offense, will miss the rest of the season after tearing his ACL in Monday night’s 14-9 win over St. Louis.Pro Football Talk first reported the news that hurts an offense that is ranked 28th in the NFL, averaging 198.8 yards per games. Rice suffered the injury midway through the second quarter of Monday’s game on a first-and-goal play from the 9-yard line.Quarterback Russell Wilson tried to get the ball to Rice on the left side of the end zone, but overthrew him slightly. Both Rice and Rams cornerback Janoris Jenkins dove for the ball, with Jenkins landing on top of Rice’s lower body. Rice noticeably limped after the play and did not re-enter the game.Rice has not been the player expected after signing a five-year, $41 million deal with the Seahawks prior to the 2011 season. After catching 83 passes for 1,312 yards and eight touchdowns with Minnesota, Rice has not caught more than 50 passes in his three seasons with Seattle. Injuries have been a major part of his minor production.