DarthFed said:
Regardless how he got it, it was a big win for Grigor to take out Murray and reach his first semi. The only problem seems to be he has trouble pushing through the door in the huge matches. The 3rd set TB vs. Rafa and 4th set TB vs. Nole were ones he should have won but he gave them away. So there is still a long ways to go for him to be a great player IMO.
"Regardless of how he got it" - exactly. This is part of what I'm trying to say. This isn't Lukas Rosol or Sergiy Stakhovsky or Steve Darcis, all of whom happened to play great against an elite in the right place at the right time, but for whom we didn't expect a lot more (although, as an aside, I sometimes wonder why Rosol isn't more consistently in the top 40). This is a young player who may be the most talented of his admittedly rather weak generation, who of all players in his generation (which I'm loosely defining as those players born in the first half of the 90s, 90-94) has the best chance of adding a Slam or three to his resume.
In that sense, I disagree that there's "still a long ways to go for him to be a great player." I think he's quite close to his peak potential, which is substantial but clearly not on the level of Federer, Nadal, and Djokovic at their best. I think the best-case scenario for Grigor is that he walks away with a few Slams and is somewhere in that nebulous "near-great" category of 2-4 Slam winners - Safin, Kafelnikov, Courier, Kuerten, and yes, Andy Murray (so far).
I could also see Dimitrov having a similar career as David Nalbandian - who may be one of the greatest players to never win a Slam. Think Ferrer, Berdych, Tsonga, Rios, Medvedev, Enqvist, Henman, etc - players that were, perhaps, better than some one-Slam wonders but were never in the right place at the right time.
As an aside, it is interesting--and rather convenient--to note that no one in the Open Era has won 5 Slams, which gives us a nice gap between 4 and 6 by which we can separate to true greats from the near-greats. Who knows, maybe someone like Andy Murray can buck that trend and win three more - it certainly would be fitting, wouldn't it?