Sara Sorribes Tormo beat Ena Koike 7-5, 6-2 in Guadalajara, converting four break points to Koike's two and winning 27 return points to 21. A steadier first serve was the platform: 72% (38/53) against 54% (32/59) for Koike.
Sorribes Tormo broke in the third game at 2-1 and again in the fifth at 4-1, but Koike hit back with breaks in game eight at 5-3 and game ten to level at 5-5. The turning point came immediately: Sorribes Tormo broke again in the 11th game at 6-5 to take the set, then broke in game five at 3-2 and game seven at 5-2 to close out the second.
The number that stands out is Koike's break-point defence: just 2 of 6 saved (33%), against 2 of 4 (50%) for Sorribes Tormo. Koike had the only aces of the match, three in total, but her eight double faults and 50% first-serve rate in the second set left her exposed.