VIDEO: Prokhorov puts players to shame at Nets training camp

Mikhail Prokhorov announced last week he was joining his Brooklyn Nets at training camp at Duke University.

The eclectic Russian billionaire jokingly referred to the visit as a "field trip," but it wasn't all fun and games for the players, as Prokhorov actually served as a drill sergeant of sorts.

To wit, the 50-year-old Prokhorov demonstrated (with ease) a tough core exercise involving two training balls.

Markel Brown and Rondae Hollis-Jefferson, meanwhile, struggled mightily with Prokhorov's challenge.

Prokhorov added to the humiliation by bringing out a series of trickier exercises. For example, Prokhorov did push-ups while balancing a stick on a ball.

Another, where he dribbled with both hands while balancing on a ball.