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In 2018, Czech tennis player Barbora Krejčíková became World No. 1 in doubles. She achieved this ranking on 10 July 2018, after winning the Wimbledon Championships in women's doubles with Květa Peschke. Krejčíková is the first Czech woman to become World No. 1 in doubles, and she is the youngest player to achieve this ranking since 2000.