Frances Tiafoe reached the US Open semi-finals for the second time in three years after Grigor Dimitrov retired due to injury while trailing 6-3, 6-7, 6-3, 4-1. This marks the first time since 2006 that an American man is assured a spot in the US Open final, with Tiafoe set to face fellow American Taylor Fritz, who defeated Alexander Zverev in another quarter-final match. Tiafoe's performance has been impressive, highlighted by his aggressive play and ability to convert break points, while Dimitrov's fatigue from a previous five-set match ultimately led to his withdrawal. Both players expressed disappointment in the way the match concluded, with Tiafoe acknowledging the high level of competition prior to Dimitrov's retirement. The upcoming semi-final is notable as it will be the first all-American men's major semi-final since 2005, intensifying the anticipation for a potential American champion. Tiafoe's success could elevate him in the ATP rankings, possibly making him the top American player.