Tennis Serena Williams pulled out of the French Open ahead of the fourth round because of a pectoral muscle problem. It was her first major in a year, after the birth of her daughter. Second seed Caroline Wozniacki was knocked out in the fourth round by Daria Kasatkina. Racing Masar, ridden by William Buick, won the Derby at Epsom. It had been given odds of 16-1; the favourite, Saxon Warrior, came fourth. Rugby league In the quarterfinals of the Challenge Cup, St Helens beat the holders Hull FC 25-22. They will play Catalans in the semi-finals.