Originally Posted by pc1
Actually the thought occurs to me that it wouldn't be that bad to have the players commit to a certain amount of doubles tournaments. It probably would have the volleying skills of some of the players today. John McEnroe used doubles instead of practicing.
Well for a player like Nadal that's going to be hard because he's struggling just to compete in single. He doesn't have anything left to compete in double. Nole had a great run from starting 2011 by winning 5 slams. Had he chose to play double and put as much effort to win slam in double, that could possibly cost him winning in single. It's not that easy.
EDIT: I know the Williams Sisters play double, but they don't play that much in single unlike the top tier players in the ATP, and the WTA isn't as brutal as the ATP.