Friday's Shanghai round of 64 pits Alexander Zverev against Yibing Wu on hard. Alexander Zverev has won 8 of the last 10. Yibing Wu is 4-6 across recent matches.

Hold strength tells the story — 73.7% versus 68.3% on first-serve points in Zverev's favor. Wu needs several things to break right at once; the percentages say they usually don't.