Triumph and Tears: Relive 10 of the Most Emotional Moments From the 2021 US Open

Spain's Carlos Alcaraz was one of the standout teens at the US Open before he retired from his quarterfinal match on Sept. 7. Here, he reacts to winning an intense third-round match against Stefanos Tsitsipas of Greece, who was seeded No. 3 in the tournament. This victory made Alcaraz the youngest player to defeat a top-three-ranked opponent at the US Open in the Open era. (Note: After he won the following match, he became the youngest men's singles US Open quarterfinalist in the Open era.)