Tennis: Naomi Osaka stunned by Swiss wild card Jil Teichmann in Cincinnati

August 20, 2021 1:28 PMCINCINNATI (REUTERS) - An error-prone Naomi Osaka was stunned 3-6, 6-3, 6-3 by Jil Teichmann in the Western & Southern Open's third round in Cincinnati on Thursday (Aug 19) but the world No. 2 said she had tried her best and would not lose any sleep over the defeat.