Oklahoma State's home game against Oklahoma on Saturday has been postponed due to a positive COVID-19 test within the Cowboys' program, both schools announced.
Oklahoma State also announced on Friday that it has paused activities indefinitely.
"The well-being of the young men in our program has always been and will continue to be the most important thing to me, my staff and our administration," Oklahoma State coach Mike Boynton said. "We've been very fortunate to play the games we've played thus far, and we will await the advice of our medical staff before making any decisions on a return to team activities."
Oklahoma State (9-3, 3-3 Big 12) also won't play on Tuesday at West Virginia. That game was postponed amid COVID-19 concerns among the Mountaineers.
The Sooners (7-4, 3-3) are scheduled to return to action on Tuesday against visiting Kansas State.
Xavier and Seton Hall also postponed their Saturday matchup. The Big East Conference announced Thursday night that the game in New Jersey had been postponed due to COVID-19 issues within the Xavier program.
No makeup date has been announced.
This is the second time this season that Xavier has had to postpone contests due to COVID-19-related issues within its own program.
The Musketeers paused all team activities on Dec. 11 for seven days due to contact tracing.
Xavier (10-2, 3-2) is set to play its next game at No. 25 Connecticut on Wednesday.
Most recently, Xavier defeated Providence 74-73 at home on Jan. 10.
Next up for Seton Hall (9-5, 6-2) is a road game vs. No. 3 Villanova set for Tuesday.
--Field Level Media