M'Baye heaved the inbounds pass to Osby, who hesitated before finding Grooms near halfcourt.
Grooms sped toward the basket and shot the ball with one second remaining.
“We wanted to get it quickly to Sam and push it with maybe a little pick there,” Kruger said of the final play. “Didn't get things done quickly in the backcourt, but again Kansas State's trying to keep that from happening too. There were a lot of battles on the day and they won that one too.”
The Sooners struggled collectively from the floor, going 19 of 49. Osby, who had 13 points and seven rebounds, was the only Oklahoma player to score in double figures.
Will Spradling led the Wildcats with 12 points.
Grooms was 3 of 5 from the floor to finish with seven points for the Sooners. He played 12 minutes, all in the second half.
“Sam gave us a good spark,” Kruger said. “He had a little attack. We just didn't have much attack going. ... I thought he gave us a good lift when he went in the ballgame and made some nice plays.”