Katarzyna Kawa #128Poland22 – 0Belinda Bencic #14Switzerland0

Kawa has been on court for the equivalent of roughly six sets in Ningbo, two of them qualifying matches shortened by opponent retirements, while Bencic has completed barely more than one set. The effects pull in opposite directions: Kawa is match-hardened but carries heavier legs into the round of 16, Bencic is rested but has had little recent competition to calibrate her level. Both played their openers, so the difference is time on court rather than rest days, which keeps the edge modest. The retirements in Kawa's qualifying matches also mean her own level across those matches is only partly measured.

Chwalinska's withdrawal explains the oddity of Kawa meeting the same opponent in qualifying and in the main draw within three days: Snigur retired at 6-1, 2-0 in the qualifier, entered as a lucky loser, and lost 1-6, 6-2, 6-4 in the first round. Beating a player ranked No. 40 twice in three days gives Kawa's run more substance than a routine qualifier's path, and she did it after dropping the opening set. The limit is that Snigur had won their two previous meetings, including in Beijing on 30 September, and was playing her third match of the week after a retirement, so the win says more about Kawa's resilience on the day than about a changed matchup.

Kawa, ranked No. 128, has needed a third set in seven of her last eight completed hard-court matches.

The sample runs from 3 August to 20 October and contains three 2-1 wins, four 1-2 losses and a single 2-0. That spread says nothing about whether Kawa beats Bencic, but it does point to matches that stretch rather than finish quickly, and it fits the 13-12 games, three-set win she completed in Ningbo on 20 October.