Australian Open
Association of Tennis Professionals chairman Chris Kermode and world no.1 Novak Djokovic.

What's going on at the Association of Tennis Professionals? AAP has reported that "a war is brewing" over player pay, a war that could result in the ousting of ATP chief executive Chris Kermode. If the labyrinthine world of professional tennis bodies confuses you, here's a quick primer.

What is the ATP?

The ATP is the main men's tennis governing body, founded in 1972 to protect the interests of male players (women had to wait until the next year for the Women's Tennis Association to be formed). Kermode took over as ATP chief executive on January 1, 2014. Apart from the chief executive, the ATP board consists of three players' representatives and three tournament representatives.