Madison Keys surprisingly lost in straight sets to Polona Hercog, while Caroline Wozniacki beat Veronika Kudermetova.
Ashleigh Barty, Serena Williams and Angelique Kerber face a tough time at Wimbledon after they were all drawn in the same quarter.
The former US Open champion has vowed not to get too ahead of herself after reaching her seventh grand slam quarter-final at Roland Garros.
Simona Halep played a brilliant decider to power past the considerable challenge provided by Alja Tomljanovic.
Simona Halep suffered a shock early loss in Rome when she was defeated in three sets by Marketa Vondrousova, while Madison Keys also lost.
The 24-year-old has scored her first WTA silverware of any kind since 2017.
Madison Keys played superbly to beat Puig in straight sets, while Wozniacki beat her good friend Martic for the sixth consecutive time.
Madison Keys progressed to the quarter-final stage of the Volvo Car Open for the fourth time in her career with an impressive straight-sets win over Jelena...
The former Australian Open champion is bidding to win her first WTA title on the clay since 2011.
The former top 10 player has revealed that she use to eat only 300 calories of food a day as a junior player.
Elina Svitolina advanced to the Australian Open quarter-finals for the second year in a row with victory over Madison Keys.
The former US Open finalist reveals that one area of her game she has adjusted since working with her hew mentor.
Elise Mertens beat Margarita Gasparyan 6-1 7-5 in the second round while Madison Keys brushed aside Anastasia Potapova 6-3 6-4.
The former US Open finalist gives her opinion about Williams' Grand Slam chances.
The 20-year-old has become the first Japanese player to reach a grand slam final on the WTA Tour.
After being overcome with nerves in the 2017 final in New York, the American said she is better equipped to handle the pressure.
Last year's runner-up put in a measured performance to reach another final four in New York.
Madison Keys produced an excellent display to thrash Bernarda Pera 6-4 6-1 and advance to the third round of US Open 2018.
Both battled through heavy rain that wreaked havoc on the Thursday schedule.
Madison Keys talked about the reasons for her shock loss, why some upsets are not that shocking and the example of Serena Williams.