I feel so sorry for Grigor, he was leading with an early break 3-0 even 5-2 and forced Andy to serve to stay in the set but when Grigor was serving for the set 5-3 Andy got the break and soon it was 5-5 6-6 and a horrible TB for Grigor who didn't take a single point!!!
When he was serving for the match, Grigor made 3 HORRIBLE unforced errors. Murray isn't playing that well, he's a little pushy in this one (sorry Murrayfans if you find this offensive, but it's my opinion here).
Grigor was playing a hell of a match the first half of the first set, but then... a lot of UEs.