The announcement came just hours before the fifth-ranked Cowboys, 43-16, were scheduled to play Wichita State, 45-15, in a winner's bracket game of the Stillwater Regional.
Oliver, a first-team All-Big 12 Conference selection who was 7-2 with a 2.20 ERA in 15 appearances this season, would probably have started against the Shockers in tonight's game, scheduled to begin at 7 p.m. at Allie P. Reynolds Stadium.
The OSU release said the school would have no further comment on Oliver's status.
OSU's Andrew Oliver Declared Ineligible
GoPokes Top Stories
Cowboys Add Malcolm Rodriguez To Commit ListIt didn't take long for standout athlete Malcolm Rodriguez to make his decision after receiving an offer from Oklahoma State on Thursday night.
GoPokesYesterday at 8:02 PM
Bedlam Matchup: Mayfield vs. SternsQuarterback Baker Mayfield is described by Mike Gundy as the player who inspires his teammates to play better, but the same can be said about Cowboys free safety Jordan Sterns.
GoPokesYesterday at 7:02 PM
Bedlam Matchup: Rudolph vs. ThomasOklahoma State quarterback Mason Rudolph will be going against an OU secondary that has given up its share of big plays this season.
GoPokesYesterday at 6:52 PM
Taylor Going To NYC As Piesman FinalistOklahoma State defensive tackle Vincent Taylor one of three finalist for Piesman Trophy.
GoPokesYesterday at 4:10 PM
Cowboys Use Late Run To Escape Rogers StateOklahoma State used a 13-0 run late in the second half to pull away from Division II Rogers State for a 101-85 victory on Wednesday night at Gallagher-Iba Arena.
GoPokesWednesday at 7:50 PM