Fedor training in his favourite Nike apparel(pics)

I can see only 2 logical explanations to his nike training...

Either he's trolling ufc/reebok


Nike sponsors him and the event in Japan in general.

If that's the case I wonder if nike would sponsor his opponent as well. Trying to think of fighters who were sponsored by nike in the past... Jones and Silva are signed under the ufc...so who else?