Chela has been playing really well of late. He has had two very good performances against Roddick. He probably should've won the 1st set against Roddick last week but choked that way and then went away in the 2nd. His BH has been very impressive.
Well, a couple of weeks ago he was outside the Top 50, so it hasn't exactly been one to remember up till now... but he was a finalist three years ago at the Long Island event that was replaced by this one, so he obviously plays well at this time of year.