The victory was the 30th of Kurt Busch's career and he and Kyle Busch became the only brothers in Cup history with 30 wins each.
In a dim season for the last-place Kansas City Royals, rookie Brad Keller has been one of the few bright spots.
St. Louis moved a half-game ahead of Milwaukee and within four of the first-place Chicago Cubs in the NL Central.
VIDEO: Police interrupt MSU football scrimmage with a special message - https://bit.ly/2wbC2rH
Kansas City's new starting quarterback, Patrick Mahomes, had an up-and-down game.