What it means: It wasn't as easy as many expected, but Pittsburgh did just enough to improve to 2-1. The Steelers are in a three-team tie atop the AFC North with the Ravens and Browns.
Thumbs up: Ben Roethlisberger once again showed why he is one of the best clutch quarterbacks. On the game-winning drive, he completed 3 of 4 passes for 39 yards and scrambled for 11 yards to get the Steelers in range for Shaun Suisham's 38-yard field goal with four seconds left in the game.
Thumbs down: Pittsburgh struggled all game to protect Roethlisberger. Dwight Freeney and Robert Mathis both forced fumbles in the first half, which led to a field goal and a 47-yard fumble return for a touchdown.
First takeaway: The Steelers defense finally forced a turnover this season, and it was a timely one. James Harrison stripped Colts backup quarterback Curtis Painter, and Troy Polamalu returned it for a 16-yard touchdown to take a short-lived 20-13 lead in the fourth quarter.
Banged-up line: Pittsburgh had three starters on the offensive line leave the game, including the entire right side at one point. Right guard Doug Legursky and right tackle Marcus Gilbert both had shoulder injuries and were replaced by guard Ramon Foster and tackle Trai Essex. When left tackle Jonathan Scott was forced out late in the fourth quarter with a leg injury, Gilbert had to come back into the game.
What's next: The Steelers play at Houston, which wraps up a stretch of three road games in the first four weeks of the season.