Zach Fish hit a grand slam and knocked in six runs to help top seed Oklahoma State defeat Oklahoma 13-4 in the Big 12 baseball tournament Wednesday in Oklahoma City.
Fish's blast highlighted a six-run bottom of the sixth inning. Donnie Walton, Gage Green and Craig McConaughy each added three hits for the Cowboys (42-14).
Vince Wheeland got the win to improve to 9-0 on the season. The reliever pitched the final 4 1/3 innings and allowed one run on four hits.
Craig Aikin had four hits for Oklahoma (28-28). Sheldon Neuse and Anthony Hermelyn each had two.
Oklahoma led 3-2 before the Cowboys exploded for 11 runs in their final four innings.
Oklahoma had 11 hits but left 12 on base.
(Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)