Oklahoma State outslugged Kansas State, 13-7, on Monday in Manhattan, Kan., and swept the Big 12 series over the Wildcats.
In Monday's series finale, the Cowboys rallied for nine runs over the final two innings for their sixth-straight conference win as they improved to 7-2 in the Big 12 and 18-11-1 overall. The Wildcats are now 15-17 and 2-7 in the league.
The six-game Big 12 winning streak marks the longest by an OSU team since 2015, and the back-to-back conference series sweeps is the first time the Cowboys have achieved that feat since 2014.
Trevor Boone's eighth-inning grand slam fueled the Cowboys' comeback victory, while Colin Simpson and Michael Neustifter added three RBI apiece.