That's the Odd Ball Game

S1, E39: Voltron destroys a Drule supply base, and the Galaxy Alliance fleet is able to capture a number of Drule officers. Jeff befriends Anotr, a Drule lieutenant, and the two put together a game of football between Voltron Force and the DRULES. The game is interrupted by a Drule attack force, that rains down destruction on friend and foe alike.