"If I can't turn around after 24 hours and play again then I shouldn't be on tour," says top seed.
Keep up with all the action from Thursday night's women's singles semifinals featuring Serena Williams and Anglique Kerber in the live blog.
The Tower of Tandil was driven to tears during one of the emotional high points of the season.
After back-to-back quarterfinals in the last two majors of the year, Lucas Pouille is hungry for more success.
The Great Dane won't open up on this topic, but does open up on a few others.
When a strange sound interrupts Andy Murray on break point, the Scotsman takes offense.
Keep up with all the action from a busy day of quarterfinal action with the Tennis Now U.S. Open Live Blog!
