sentences:  But on Pittsburgh’s first play, in which Bettis tried to punch it in for an insurance touchdown, he fumbled for the first time all season when linebacker Gary Brackett popped it from Bettis' hands with his helmet.Indianapolis defensive back Nick Harper recovered the ball and appeared to be on his way for an Indy touchdown that would've given the Colts the lead when Roethlisberger made a season-saving tackle at the Colts' 42-yard line (midfield), spinning around and grabbing his ankle.Eventually, the Colts then advanced to the Pittsburgh 28-yard line, but kicker Mike Vanderjagt, who had been perfect at home in the playoffs, missed a 46-yard game-tying field goal attempt wide right with 17 seconds remaining, and the Steelers ran out the clock.