One interesting option available today is the total games in the Cilic vs Del Potro match. Sportingbet has the line at 40 games, Betfair at 38.5.

Together both players have competed in 48 best of 5 set matches in their careers, of those only 13 have been more than 40 games (15 more than 38.5). A low percentage (27% and 31%).

Effectively people are calling this match going to at least 4, probably 5, sets. Big call for a 50/50 bet.

I'm on the under 40 games at Sportingbet - reckon it is close to a 67% chance of happening.

Best wishes if you have a try.

Cheers

Tony