There was a stretch early in the second half where each team had layup opportunities and a pretty solid collision occurred with no call (I believe twice on SDSU attempts, once on a Creighton attempt). While I am not a fan of the game getting excessively physical, I have no problem with letting plays like those go as long as there is consistency throughout the game.
While there was sufficient contact (viewing it outside of the context of this specific game) to warrant a foul call on the last shot, there had to be at least a dozen earlier shots that had more contact from the defender than that one.