Sabalenka's staggering tiebreak record illustrates her play under pressure but also her vulnerability in matches this year.

Emma Raducanu has been making huge strides this season. The Brit has focused on packing her schedule and getting as many matches as possible, and it’s paying off. On Monday, she came painstakingly close to beating world No. 1 Aryna Sabalenka, just losing 7-6 (3) 4-6 7-6 (5) in Cincinnati.