One of the greatest ever rivalries in sport has been given a boost after Roger Federer beat Rafael Nadal in the Madrid Open, and tennis spread bettors have been given a bit more to think about in the run up to the French Open. Most, including Sporting Index’s traders, will have been surprised by Rafa’s defeat, although buyers of his outright index spread for Roland Garros will not feel too worried. That loss was only the Spaniard’s fifth on clay in 155 matches since 2005. Buyers of Federer’s outright index for the tournament will of course be impressed by his victory and the confidence that he will take to France as a result. (more…)