Pittsburgh escaped with a 16-13 overtime win over the Chiefs - but must now wait for results of a scan on a shoulder injury suffered by their quarterback.
NFL: Roethlisberger injury blow marrs Steelers' victory over Kansas City
The Pittsburgh Steelers escaped with a 16-13 overtime victory against the Kansas City Chiefs - but must wait to find out the full cost of it after losing quarterback Ben Roethlisberger to a shoulder injury.
In a rain-soaked war of attrition in which Kansas City forced overtime with a late fourth-quarter drive, Pittsburgh ended the Chiefs' resistance soon after when a Lawrence Timmons interception set up Shaun Suisham's 23-yard winning field goal.
The Steelers (6-3) needed just 51 seconds of the extra session to seal a fourth straight victory that kept them one game behind the AFC North-leading Baltimore Ravens.
Pittsburgh were expected to easily see off the struggling Chiefs (1-8) but the game did not follow the script and the home team battled to overcome a 10-0 deficit and a Roethlisberger shoulder injury that ended his game in the third quarter.
Roethlisberger tossed a first-half touchdown to tie the game at 10-10 by the intermission but his duties were turned over to backup Byron Leftwich after taking a big hit on the opening drive of the second half.
The Steelers edged 13-10 ahead early in the fourth quarter before Kansas City rallied on their final drive to set up Ryan Succop's game-tying 46-yard field goal.
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