Inside the Battle to Control, and Fix, Tennis

The Italian tennis player Matteo Berrettini is one of several rising star players who features in “Break Point,” the new Netflix documentary series.Credit...Alana Holmberg for The New York TimesMELBOURNE, Australia — Walking the grounds of Melbourne Park, where the Australian Open is in full swing, one could easily believe that all is well and peaceful in professional tennis.

Stadiums are packed. Champagne flows. Players are competing for more than $53 million in prize money at a major tournament the Swiss star Roger Federer nicknamed “the happy Slam.”

Behind the scenes though, over the past 18 months a coterie of billionaires, deep-pocketed companies and star players have engaged in a…