S2·E30 The Flying Sorcerers, Part 2
Aired October 16, 1965
Synopsis
Polly is caught by the two royals, but gets off a call to Underdog for help. After seeing his true love being captured by the aliens, Shoeshine Boy runs into a phone booth and becomes Underdog. Bric and Brac use their evil space magic to turn our hero into a basketball, and Underdog is sent bouncing along into a kid's field game.