Wow, very close match. Could've gone either way. I watched the 1st and the beginning of the 2nd set.
The stats shows clearly the different playing style of Zheng vs BHM. The two have very similar Winners/UE stats -4 and -3 (Winners minus UE), but Zheng had 36 vs 25. Aces: 9 vs 2. 1st serve percentage: 44% vs 72%.
Impressive sweep from BHM.
Edit: # of Aces