49ers vs. Colts live blog: Fourth quarter

SAN FRANCISCO — This is the live blog for the fourth quarter of the 49ers’ Week 3 game against the Colts. I’ll update this frequently with information and analysis from the press box.

3:33 Willis has a groin injury and is out for the rest of the game.

3:34 Brooks hits Luck on third-and-nine and forces a bad throw.

3:34 Vinatieri misses the 51-yard field goal wide left. 49ers’ ball at their 41.

3:38 The 49ers go three-and-out. Robert Mathis and Cory Redding sacked Kaepernick on third-and-six. Celek dropped a good deep pass on first down. Lee punts the ball into the end zone. Colts’ ball at their 20 with 11:14 to go in the fourth quarter. Jean Francois has a groin injury and his return is doubtful.

3:47 Rogers commits holding on Wayne on third-and-four. First-and-10 at the SF 48.

3:49 Next play Bradshaw rushed for 7. Next play Bradshaw rushes for 27 and Asomugha is hurt. He’s walking off the field slowly. First-and-10 for the Colts at the 49ers’ 13.

3:52 On third-and-three from the 49ers’ 6 Luck fakes a handoff and boots around the left for a touchdown. 20-7 Colts with 4:13 left. I’m going down to the field. Back at you soon.