And back on topic!
When Djokovic is on top of his games, Berdych does not have a chance of beating him.
First set, Berdych was not playing well and it's like a practise session for Novak. Nole was relax and after breaking Berdych early, he went for his shots and painting lines left and right.
Second set, old bad habit was back with Nole who has the inclination to lose his focus after routining his opponents in prev. set and he paid the price for this set. Berdych with the early lead were confident and going for his shots, playing more aggressive and paid off.
Third set, it was Berdych went to vacation and Nole picked up his game which he did approaching the end of second set.
Last set, Nole was on cruise control, Before serving for the match, he had 13 winners and 3 UEs. Then, he got tight (again) while serving for the match and had more UEs in one game than the prev. 9 games but being mentally much tougher than Almagro
, he finally converted his 4th match point.