Ridiculous but funny.
A "documentary" on the rivalry between and American tennis player, Aaron Williams (played by Andy Samberg), and an English tennis player, Charles Poole (Kit Harrington, of Game of Thrones fame). Focuses largely on the match where their rivalry reached a climax - Wimbledon 2001, 1st round - a match that took seven days...
Just from that you'll know this is not going to be a conventional, even realistic, comedy. It is incredibly over-the-top, to good effect. Some of the scenarios are so out there you can't believe anyone ever thought of putting it into a movie. However, this is HBO...
Not brilliant though. It often does rely on shock value for its laughs, and the writing does feel a bit sloppy at times.
Can't fault the cast though. Samberg and Harrington are great in the lead roles. Solid support from a host of big names: Michael Sheen, Mary Steenburgen, Lena Dunham, Fred Armisen, Howie Mandel plus several stars as themselves: John McEnroe, Chris Evert, Serena Williams, David Copperfield.
Outrageous fun.