Victoria Azarenka made a winning return to Stuttgart with a 7-5 6-4 victory over Russia's Vera Zvonareva in what was an engrossing battle in the first round of the Porsche Tennis Grand Prix on Wednesday.
Roger Federer knew he had things going his way at the Miami Open when he hit three shots off his frame during a wild 17-stroke exchange and still won the point because Filip Krajinovic dumped a half volley into the net.
Venus Williams, 38, turned back the clock in the final two sets, dialling up the speed on her first serves and playing stout defence to seal a win that looked unlikely when she was down two breaks in the second set.
Petra Kvitova suffered cuts to her left hand while defending herself during a home invasion in 2016, while Seles was stabbed in the back during a match in Hamburg in 1993 which kept her off the court for more than two years.
Petra Kvitova says Naomi Osaka's shyness is a problem for her as she struggles to deal with the increased scrutiny in the wake of her success at the Grand Slams and her rise to the top of the world rankings.
Maria Sharapova, who was back on the grand-slam stage after returning from a doping ban, was knocked out in the fourth round as she lost 5-7, 6-4, 6-2 to Anastasija Sevastova. The 30-year-old Russian finished with 51 unforced errors, compared to 14 for Sevastova.