Romania's Simona Halep poses with the trophy as she celebrates after winning the final against Serena Williams of the U.S. in Wimbledon at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. REUTERS/Hannah McKay

Romania's Simona Halep celebrates winning the final against Serena Williams of the U.S. in Wimbledon at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. REUTERS/Carl Recine

Romania's Simona Halep poses with the trophy as she celebrates after winning the final against Serena Williams of the U.S. in Wimbledon at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. Ben Curtis/Pool via REUTERS

Romania's Simona Halep kisses the trophy as she celebrates after winning the final against Serena Williams of the U.S. in Wimbledon at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. REUTERS/Hannah McKay

Romania's Simona Halep poses with the trophy as she celebrates after winning the final against Serena Williams of the U.S. in Wimbledon at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. Laurence Griffiths/Pool via REUTERS

Romania's Simona Halep and Serena Williams of the U.S. pose with their trophies after the Wimbledon final at All England Lawn Tennis and Croquet Club, London, Britain, July 13, 2019. Simona Halep became the first Romanian to win a Wimbledon singles title after she beat seven-times champion Serena Williams 6-2 6-2 in the final on Saturday. REUTERS/Hannah McKay