Saturday's Hangzhou round of 16 pits Coleman Wong against Daniel Vallejo on hard. Coleman Wong comes in at 4 wins from the last ten. Daniel Vallejo has won 4 of the last 10.

Wong's 73.7% behind the first serve (against 65% for Vallejo) means break chances should be scarce in one direction. This one is close to a coin flip, and the lean toward Wong is exactly that — a lean.