Really great win for Greg, his first since May I was a little worried after his missed those two set points in the 2nd set.
Hopefully this'll give him plenty of confidence going into the next match, good for him to be shaking off the rust ahead of the US Open which is probably his best chance of doing well in a slam.
Speaking afterwards Greg said "It's always pleasing to win, the back doesn't feel too bad. But it will be good to have back-to-back matches to test it out because I have not had to come back the second day before."