Comeback – Underdog’s money line
Double action - An "if bet" in sports betting that is processed if the precedent bet wins, ties or cancels.
Eastern Line – Also called a Wide Line, is a money line divided by 20
Exotic - any wager other than a straight bet, parlay, teaser, or if - also called a prop or proposition.
Lock - Easy winner; can not lose.
Single action - An "if bet" in sports gambling that is processed only if the precedent bet wins.