Given that he is such a fan of MMA, it was no surprise to see Shaquille O'Neal at the UFC Fan Expo on Saturday.

What was surprising, though, was the number of people he challenged to fights. Not only did Shaq express his interest in a bout with Hong Man Choi, but he even said he wished that he and Tito Ortiz had done battle in their younger years.

Tito came on stage to respond to Shaq's challenge. will showcase one Moment of Shaq every day until the
Celtics open the season against the Heat on Oct. 26 at the TD Garden.

Aug. 28: Shaq and Dwight Howard show off their moves.