and a football player can date every night if they want to. If Tanner is motivated, it should be easy to get married. The battle is weeding through the quantity to find the quality and not getting caught up in "there's somebody better around the corner" syndrome. There are plenty that remain single at graduation too for various reasons.
At Stanford, he'd likewise be popular. However, if he wasn't compatible with the half dozen or so "cream of the crop" prospects in the ward, then he likely wouldn't get married. The chances are higher at Stanford that he'd come out single. Not that it's necessarily a bad thing.