After their marriages fail, Oscar and his former college roommate, Felix, decide to live together.

Felix offers his help when Oscar is hired to ghostwrite a retired baseball player's autobiography.

When Oscar realizes he forgot Felix's birthday, he plans an impromptu surprise party.

Dani wishes she had a boyfriend for her high-school reunion so Oscar, Felix and Ted work on finding her a man.

Oscar hopes to reconnect with an old flame; Felix tries to show his ex that he is a changed man.

When Oscar begins dating Felix's doctor, Felix's hypochondria is exacerbated.

Against Teddy's advice, Felix persuades Oscar to appear on a sports TV show.

When Oscar feels threatened by Felix's surprising performance on the softball field and basketball court, they agree to a decathlon to determine which one of them is the better athlete. Geoff Stults guest stars.

When Oscar and Felix make a trip to Ashley's (Christine Woods) to retrieve Felix's special pillow, a secret that he has kept from Oscar is revealed. Five-time NBA All-Star Chris Webber guest stars.

Oscar and Dani get stuck on the subway. Meanwhile, Felix takes over at his yoga class.

Oscar becomes weirdly obsessed with living up to Murph's reputation when he finds out that the girl he is seeing used to date the handsome ex-baseball player.

When the IRS decides to audit Oscar and his ex-wife, Gaby and Felix offers to mediate between the contentious exes and suddenly realizes that he might be the reason Oscar was audited in the first place.