UFC middleweight Mark Munoz ran into a surprising fighter while training at the famed Blackhouse gym. The Los Angeles fighting home of Anderson Silva, the Nogueira brothers, Junior Dos Santos and Jose Aldo also hosts multi-platinum artist Usher.
Usher is training for a fierce dance-off with Justin Timberlake. Their bout has title implications, as the winner will have a shot at the next "King of Pop" belt.
Photo credits: Getty, Mark Munoz's Twitter