• Sloane Stephens, the defending champion, lost in the quarterfinals to Anastasija Sevastova on Tuesday at the U.S. Open.
• The top American on the men’s side, No. 11 John Isner, also fell, losing to No. 3 Juan Martín del Potro.
• Refresh here for live results and analysis from Day 8 of the 2018 U.S. Open
• Live scores and schedule: Men | Women
• How to watch: Matches will be streamed on ESPN3 and ESPN+ beginning at 11 a.