While the most impressive part was his defense . Stan is well-known for his firepower, but yesterday he also had been amazing in defense. Sure, Djokovic's shots may lack power, but he was smacking some fh's while wawrinka not only defended them, but also did it with great depth. Those who says that Djoker didn't try to play agressive are mistaken. Wawrinka sometimes was rallying quite deep and then BAM one shot and he is dominating rally. He catched even well angled shots and responded great too...And also brilliant tactics on return - cheap block returns annoyed djoker...He had been trying to dictate, but wawrinka was nearly like a wall and then djoker got overpowered...Wawrinka really showed great transition in this match. That's why he is winning slams and berdych + tsonga are slamless.