The Serb started off like a bullet against Norrie, but some back issues paralyzed him. Once resolved, victories in four sets and a ticket to the round of 16.
The American explained his feelings on the track before having to retire in the third round against Mannarino: "It has been a great summer, you won't see me shedding tears here".
Despite the minimal moments of complexity, the Italian relied on determination to close the door and advance to the third round of the US Open.
