US Open 2018: Juan Martin del Potro battles past John Isner to reach third semi-finals at Flushing Meadows

US Open 2018: Juan Martin del Potro battles past John Isner to reach third semi-finals at Flushing Meadows Agence France-Presse Del Potro, the champion in 2009, goes on to face either World No 1 and defending champion Rafael Nadal or Austria's Dominic Thiem for a place in the final. The post US Open 2018: Juan Martin del Potro battles past John Isner to reach third semi-finals at Flushing Meadows appeared first on Firstpost. FirstPost Unsubscribe from these notifications or sign in to manage your Email Applets.