Alexander Zverev holds his nerve against Karen Khachanov to reach US Open final

• Zverev wins 6-3, 7-6 (7), 7-6 (6)

• German reaches third straight grand slam final

About 107 minutes into men's semi-final day on Arthur Ashe Stadium, there was finally a touch of tension radiating from the court. After falling down a set and break, his semi-final meeting with his old rival Alexander Zverev swiftly turning into a beating, Karen Khachanov fought hard to force a second-set tie-break. Deep in that tension-filled tie-break, down 5-6 on his serve, Khachanov saved Zverev's first set point with a bold forehand winner, and then at 6-7 he punctuated a screaming backhand passing shot winner with an imperious roar of his own.

There was a time when Zverev might have faltered under such pressure, but he has won too many big matches this year to allow such a small surge from a lower-ranked opponent to scare him. Zverev composed himself and he quickly regained control, navigating a second tense tie-break in similar fashion as he moved to within one match of winning a second career grand slam title in his last three major appearances by defeating Khachanov 6-3, 7-6 (7), 7-6 (6).