The Pittsburgh Steelers spent 25 minutes knocking around Alex Smith. The Kansas City Chiefs' new quarterback responded with 5 minutes of nearly flawless football, the kind that provided a glimmer of what could be for a player -- and a team -- in the midst of rebuilding. Smith guided the Chiefs to a pair of scoring drives late in the first half in a 26-20 overtime victory over the Steelers on Saturday night, sprinting 38 yards to set up a field goal then completing 6 of 7 passes on a 72-yard touchdown drive that tied it just before the starters traded their helmets for baseball cap