After handing his fellow American a crushing defeat in the US Open quarterfinals Tuesday, Frances Tiafoe held Alex Michelsen in a long embrace while the 22-year-old sobbed on his shoulder.

The US Open fan favorite was down 7-5, 6-3, 5-3 at one point.

Tiafoe had just completed an all-time epic comeback against world No. 46 Alex Michelsen, who was playing in his first-ever Grand Slam quarterfinal. After dropping the first two sets, Tiafoe punched back in the third and fourth sets to force a winner-take-all tiebreaker in the fifth.

Follow live as the singles quarterfinals get underway at Flushing Meadows.

Frances Tiafoe rallied from two sets down -- and 3-0 down in the fifth set -- to edge 22-year-old Alex Michelsen 5-7, 3-6, 7-5, 6-3, 7-6 (10/6) and reach the US Open semi-finals on Tuesday.But in a match of swinging momentum shifts,

Para alcanzar su tercera semifinal del Abierto de Estados Unidos, Frances Tiafoe debió remontar una y otra vez.