Coco Gauff, 19, secures her maiden Grand Slam at the US Open, defeating Aryna Sabalenka

Coco Gauff, at age 19, secures her first Grand Slam title.

She overcomes a slow start to defeat Aryna Sabalenka in the U.S. Open final.

The raucous crowd shows unwavering support from start to finish.

Gauff becomes the first American teenager to win the U.S. Open since Serena Williams in 1999.

Her victory marks a significant moment in American tennis.

Gauff's emergence in the tennis world began at 15 when she became the youngest Wimbledon qualifier and reached the fourth round in her Grand Slam debut in 2019.

This win signifies her arrival in the "big time" of professional tennis.

Gauff's triumph fulfills expectations that have surrounded her career since her early success in 2019.