Serena Williams re-established her customary superiority, hammering Daria Gavrilova 6-1, 6-2 to reach the second round of the Cincinnati Masters on Monday.
Rafael Nadal brushed aside Canadian teenager Denis Shapovalov with a 6-4, 6-1 victory at the Italian Open as Novak Djokovic showed he is on the comeback trail by reaching his first quarter-final of 2018 on Thursday.
Seven-time grand slam winner Venus Williams exacted revenge on reigning Miami Open champion Johanna Konta on Monday with a superlative display to book her place in the quarter-finals.
Three-time winner Venus Williams saved three match points in a three-set victory over Kiki Bertens on Sunday, lining up a fourth-round clash with reigning champion Johanna Konta at the Miami Open.
Defending champion and top seed Elina Svitolina toiled for more than two hours to reach the Dubai quarter-finals while second seed Garbine Muguruza had to wait until 2am to complete her opening victory.
Simona Halep shrugged off injury concerns to record a straight sets victory over Anastasija Sevastova
Anastasia Pavlyuchenkova came from behind to win a typhoon-delayed marathon Hong Kong Open final 5-7, 6-3, 7-6 (7/3) against Daria Gavrilova in the early hours of Monday morning.
Latvia's Jelena Ostapenko sunk Spaniard Garbine Muguruza at a shock-prone Wuhan Open on Thursday, powering through a tight match to bag a 1-6, 6-3, 6-2 victory against the world No 1.
World No 1 Garbine Muguruza powered her way into the quarterfinals at the Wuhan Open on Wednesday, defeating Poland's Magda Linette 6-2, 1-6, 6-4 to set up a mouth-watering clash with Jelena Ostapenko.
Simona Halep was defeated 6-2, 6-1 by Russia's Daria Kasatkina on Tuesday at a tumultuous Wuhan Open that has seen two thirds of the top seeds tumble out in the first two rounds.