WATCH: Kit Harington vs Andy Samberg in Tennis in 7 Days in Hell

The legendary Wimbledon match between Aaron Williams and Charles Poole still echoes through tennis history. The longest game ever played, it spanned the course of an entire week and pushed both athletes to their physical and mental limits.

Except it doesn't, it wasn't, and it didn't.

In its new sports mockumentary, 7 Days in Hell, HBO pairs Andy Samberg's vain, arrogant, and mulletted Aaron Williams - the adopted brother of Venus and Serena, of course - against Kit Harington's (OUT's June/July cover boy) doe-eyed, simple-minded Charles Poole. Talking heads from both the real tennis world, Serena Williams, John McEnroe, with comedic counterparts Lena Dunham, Will Forte, and Fred Armisen.

The film looks ridiculously watchable - check out the trailer below.

7 Days in Hell premieres Saturday, July 11 at 10 pm ET on HBO.