Serena Williams' latest quest for a record-equalling 24th Grand Slam title ended with a 6-3, 7-5 defeat by Kazakh 21st seed Elena Rybakina in the French Open last 16 on Sunday. The 39-year-old American, still one short of Margaret Court's all-time record of most Grand Slam singles titles, has not gone beyond the fourth round at Roland Garros since losing the 2016 final.