Djokovic showed why he's the best in the world today. He's never down until the handshake.
The match reminded me of a boxing match a bit. Del Potro being the heavy hitter, knocking Nole down towards the end of the 1st, and having him on the ropes in the 2nd. It was all looking good, but Novak started to hit back, and eventually the big hitter ran out of steam. From then on he was there for the pickings, and Nole picked him apart in the 3rd and eventually ended the match.
The first 2 sets were the best of the tournament imo. It was a shame that the 3rd sucked so much because Del Po ran out of steam. Shame really. He still put in a great effort, despite losing, and as usual was all class during the handshake. Many would be a bit bitter after having the lead and losing, but not Del Po. Classy as usual.