Serena Williams digs deep against Pironkova to reach US Open semi-finals
10 Sep 2020
The Guardian
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US Open: Serena Williams digs deep again to edge closer to 24th grand slam title"The ScotsmanSerena Williams reaches US Open semi-final with victory over Tsvetana Pironkova in three sets"Daily MailSerena Williams survives Tsvetana Pironkova test to reach