HBO describes:
This outrageous sports “documentary” brings together Andy Samberg and Kit Harington for a look back at a pair of fictional players from the not-too-distant past, who played on the longest and greatest tennis match of all time: a seven-day, five-set marathon that took literally everything out of them. In addition to highlights (and lowlights) from the match, the special looks back at the lives and careers of the competitors: Aaron Williams (Samberg), a hyper-malcontent, and Charles Poole (Harington), a dim-witted prodigy who carried England’s hopes for a tennis champion on his shoulders.
Jack Symanski (“Saturday Night Live,” “Brooklyn Nine-Nine”) directs from a screenplay by Murray Miller (“Clone High,” “King of the Hill,” “Girls”).
The cast also includes Will Forte, Fred Armisen, Karen Gillan, Lena Dunham, Michael Sheen, Mary Steenburgen, Soledad O’Brien, and real-life tennis greats Chris Evert, John McEnroe and Serena Williams.