Games supremacy as it sounds is for supremacy of total number of games won over a match. So a player winning 6-0, 6-0, 6-0 would have a supremacy of 18. A player winning 7-6, 0-6, 0-6, 7-6, 6-4, unusual as it would be, would actually lose the games supremacy bet with a make-up of minus eight despite winning the match. In reality, particularly once a tournament reaches its later stages, players have such a dominant serve that sets are relatively close.
The other most common market—and one that normally would be the least volatile—is for the total number of games in a set. The more competitive and close a game is expected to be, the higher the quote for total games. Obviously, the men’s game, being five-set affairs in most major tournaments, has the potential to have the highest number of games. The rule that the fifth set cannot finish with a tie-break can dramatically increase the number of games in a match.
In the 2003 Australian Open, total game sellers had their ultimate nightmare when the match up between Andy Roddick and Younes El Aynaoui ended in a fifth set won 21-19. The quote for the number of games had been 38–40 with Sporting Index. It made up at a staggering 83.