Pitsburgh racks up the balls.

Patron of Mother's Family Pool Parlor (actually a KAOS front operated by The Shark).

When Maxwell Smart challenges The Shark to a game, the latter appears to back out when a secret signal tells him that a message is coming through to his hidden Electronic Brain prompting him to declare closing time.

Pittsburgh questions whether The Shark is afraid to play at which point The Shark bristles, saying he's not afraid of anyone, and instructs Pittsburgh to rack up the balls.

[Uncredited, Episode #18: "The Dead Spy Scrawls".]