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In 2014, Diyas made history by becoming the first Kazakhstani woman to reach the fourth round of a Grand Slam tournament at Wimbledon. She defeated 2011 Wimbledon champion Petra Kvitova in the third round, becoming the first player to beat a reigning Wimbledon champion at the tournament since 2008. Diyas's run was eventually ended by eventual champion Petra Kvitova in the fourth round.