US Open 2026 Quarterfinals: American Stars, Upsets and Path to the Semi-Finals The 2026 US Open quarterfinals noticed dramatic matches and stRong American performances, setting up a compelling semi-final stage. Key Upsets and American MomentumThe 2026 US Open has delivered a series of dramatic qUarterfinals that have reshaped the men's and women's fields. In a tournament that saw world No. 1 Jannik Sinner withdraw with a knee injury and first‑round shocker for Novak Djokovic at the hands of Mariano Navone,the narrative has turned toward Cinderella runs and domestic heroes. After a heartbreaking first‑round exit for Djokovic, the draw opened the door for lower seeds,culminating in a strong showing from the United States,where five players have reached the quarterfinal stage. On the men's side, a five‑set battle saw Frances Tiafoe rally from two sets down to defeat Alex Michelsen. The match extended to a deciding tiebreak in the final set, underscoring Tiafoe's resilience and fitness. Tiafoe's triumph over a fellow top‑10 contender has positioned him against the winner of Ben Shelton and Carlos Alcaraz in the semi‑finals. Shelton, the No. 8 seed,is the only other American who has reached the last eight and his match against the planet No. 2 set to become the nights headline. These two Americans are expected to contest a hard‑fought affair on the last day of play, a rarity for the U.S. Open's final rounds in recent memory.Women's Bracket Keeps the Top SeedsThe women's draw has proved more predictable. the top five seeds still remain in contention as the tournament reached the quarterfinals. the reigning champion and planet No. 1 Aryna Sabalenka fought through a tense three‑set encounter to outmatch sixth seed Linda Nosková, winning two tight tiebreaks. Jessica Pegula,seeded third, turned a first‑set deficit against Emma Navarro into a comeback victory,securing her path to the semi‑finals. The remaining slots in the bracket will feature the duel between Zheng Qinwen and Elina Rybakina,as well as a clash involving Coco Gauff.Highlights of Other MatchesIn addition to the marquee games, the tournament highlighted several notable performances. Ben Shelton's match against Carlos Alcaraz, set to kick off late in the evening, is already under discussion for its potential intensity and the physical demands on both players. Meanwhile, Emma Navarro's upset over top seed Jessica Pegula, despite the loss, showcases her continued growth and determination, with commentators praising her resilience in a physically demanding match.Looking AheadThe US Open's semi‑finals will feature the lone American, Frances Tiafoe, against either Shelton or Alcaraz, while the women's semi‑finals will pit Sabalenka against Pegula or the winner of the remaining quarterfinals. With the field opening wider at the top, the possibility for an American breakthrough is back on the table,a prospect that adds an extra layer of excitement to the closing days of the tournament. The rest of the tournament promises thrilling encounters and the potential for historic moments, as the players push toward the pinnacle of the tennis calendar.