He would match Nadal winning RG in 2005 and 2014.
I hadn't realised that. Is that the biggest gap ever?
Firstly, Federer has a similar gap (Wim 03-12). Djokovic has to surpass Fedal in that regard, else he is stuck on 13 at most :P
Secondly, Sampras has the biggest gap in the Open era, obviously (shame on you for forgetting). 12 years between USO '90 and USO '02. That's really tough to beat. A good reminder that Sampras continues to hold a couple great records and statistics that the big 3 haven't sniffed.