Karolina Pliskova vs Maria Sakkari — R64 — Madrid Open

Karolina Pliskova, 160 ranking spots below her opponent at No. 197, knocked out No. 37 seed Maria Sakkari 6-4, 7-6(6) on the back of a first-serve gap that decided everything. Pliskova won 81% of her first-serve points (30 of 37) to Sakkari's 65%, and chipped away on return — 40% of first-serve return points to Sakkari's 19%. In the first clash of a rivalry Pliskova now leads 2-1, the underdog edged a tight breaker 8-6 to close it in 91 minutes.