Shelton won 4-6, 6-3, 6-3, 7-5.
Zverev won his semi‑final 6-3, 7-6, 7-6.
If Shelton wins, he would be the first American man to win a major singles title since 2003.
The tournament honors the memory of the September 11 attacks, and players expressed thoughts and prayers.
He will face Germany’s Alexander Zverev, who also advanced after beating Karen Khachanov.
Shelton dedicated his win to his family, especially remembering his late grandmother.
The match continues a long wait for an American man to win a Grand Slam singles title.
Want to learn even more? Click here to read the full story!