Dayana Yastremska came out on top of a topsy-turvy clash to upset top seed Jelena Ostapenko and reach the quarter-finals of the Rothesay Classic Birmingham.
Ostapenko survived a major wobble in the first round against Rebecca Marino and led by a set and twice by a break in the deciding set against Yastremska, but it was the Ukrainian who ground out a 3-6 7-5 7-5 victory.
