SEATTLE -- David Akers set an NFL record and extended it with a timely 39-yard field goal to keep the 49ers in control of their own destiny for the No. 2 seed in the NFC playoffs.Patrick Willis' replacement Larry Grant stripped Tarvaris Jackson on a last-minute Seahawks drive, and Donte Whitner recovered to preserve a 19-17 49ers victory.
The 49ers (12-3) can clinch the second seed, and a first-round playoff bye, if the New Orleans Saints lose to the Atlanta Falcons on Monday night. Or the 49ers can clinch for themselves next week against the St. Louis Rams.Akers set the NFL record for field goals in a season when he nailed a 44-yard attempt to give the 49ers a 16-10 lead with 12:37 remaining in the fourth quarter. Akers broke the record set by Arizona's Neil Rackers in 2005.--Pass-rusher Aldon Smith recorded a fourth-quarter sack, giving him 14 for the season. He is just a half-sack from tying Jevon Kearse's rookie record, set in 1999.--A couple impressive 49ers run-defense streaks came to an end. Seahawks running back Marshawn Lynch had a 4-yard touchdown run with 6:41 remaining in the fourth quarter for a 17-16 lead.It was the first rushing TD the 49ers have surrendered this season. The 49ers are the first team in NFL history to go the first 14 games of the season without allowing a rushing score.Also, Lynch gained 107 yards on 21 rushing attempts to break a streak of 36 games that the 49ers did not allow a 100-yard rusher.--After completing 5 of 16 passes for 43 yards (with several dropped passes) in the first half, Alex Smith completed all four of his attempts for 64 yards on the 49ers' first possession of the third quarter.Tight end Vernon Davis, who had a case of the dropsies in the first half, had a fourth-down catch for 16 yards and another tight-rope reception at the sideline for 17 yards on the drive. Frank Gore had a 4-yard touchdown run -- his third score in the past three games -- to tie the game at 10-10 early in the third quarter.--The 49ers had a big outing from the run game. Frank Gore rushed 23 times for 83 yards, and rookie Kendall Hunter gained a career-high 73 yards on 12 carries.--The 49ers biggest concern is the status of tight end Delanie Walker, who went down with an apparent significant jaw injury in the first half. His availability for the playoffs is now in question.Walker sustained the injury when Seattle Seahawks linebacker Leroy Hill inadvertently kicked him while Walker was on the ground after a cut block on a run play.Walker's helmet flew off and he remained on the ground while the 49ers' medical staff and coach Jim Harbaugh rushed to his assistance. Walker held a towel over the left side of his jaw. He was carted off the field, presumably for X-rays.Walker has not caught a pass in the past six games, but he has provided a significant contribution to the offense as a blocker. With Walker out of the lineup, veteran Justin Peelle saw increased action as a blocker.--The 49ers were breathing easier after first-quarter injuries to defensive end Justin Smith (left leg) and outside linebacker Ahmad Brooks (right elbow). Both left the game but were cleared to return to action.--The 49ers played their third full game without All-Pro linebacker Patrick Willis. But the 49ers might be inclined to try to get him on the field next week against the St. Louis Rams in the regular-season finale rather than have him off at least five weeks entering the 49ers' first playoff game.