Definitions by asdfjkl;a

OTB 

"Off The Book" In reference to playing a hand of blackjack against the rules of Basic Strategy. Also see BTB "By The Book"

You have a 16 against the dealer showing 10. You stay. You're playing this hand OTB.

"I'm going OTB on this one."

OTB by asdfjkl;a November 10, 2011