Stanford's Landry Fields (2) takes down a rebound against Air Force's Taylor Stewart, back, with Stanford's Jeremy Green (5) looking on in the first half of an NCAA college basketball game in Stanford, Calif., Wednesday, Nov. 26, 2008. (AP Photo/Darryl Bush)
Green played 39 minutes and scored 19 points. He is the Cardinal's leading scorer for the season.
Stanford athletic director Bob Bowlsby told AP Green had a stomach virus all week and had been unable to keep any food down. He said the early indication was that he was overcome by a combination of dehydration and exhaustion.
It was not immediately clear if Green would return with the team Sunday, or stay overnight in an area hospital.
The game closed out the 76 Classic in Anaheim.