The Round Robin is a bet based on 3 selections and features a combination of different bets, 10 in total. These comprise 3 double bets, 1 treble, and 3 up-and-down bets (2 bets each). To illustrate how it works lets consider selections A, B and C. The double bets are AB, AC, and BC, the treble is ABC. An up-and down-bet is two bets in one and it works by placing the winnings of one bet against another and the reverse. So the up-and-down bets in this case would be the winnings on A placed on B, B placed on A, A placed on C, C placed on A, B placed on C, and C placed on B.