Rafa's been burning the candle from both ends. Already resulting in inability to win outside clay anymore, but wouldn't be surprised if 2013 was his last RG as well. He couldn't recover for Wimby FFS! That's how far he went this year. And still it took horrible misses by Djoker in the fifth to get it.
Depends on how Rafa will approach the tour in the future, but I'd say 0-1 more RG and that's it.