USA's John Isner and Alexander Zverev of Germany have made a winning start to their doubles campaign at the China Open. Isner, 34, and 22-year-old Zverev came from a set down to beat 2019 French Open champions Kevin Krawietz and Andreas Mies 4-6 7-5 10-7 in their Beijing opener.
Fourth-seeded Krawietz and Mies earned the lone break of the first set in the seventh game, before successfully converting their first set point in the 10th game. Krawietz and Mies appeared to be heading towards a straight-set win but Isner and Zverev recovered from an early break down as they broke back the German duo in the eighth game to level the set at four games apiece.
Isner and Zverev failed to convert any of their three set points in the 10th game but kept their focus as they broke Krawietz and Mies two games later to force a decider. Isner and Zverev then completed their comeback by realizing their second match point in the match tie-break to seal the win in an hour and 24 minutes of play.
Next up for Isner and Zverev will Russia's Karen Khachanov and Andrey Rublev, who beat Matteo Berrettini and Felix Auger-Aliassime to progress into the Beijing quarterfinal.