The Frenchman needs more time to heal his surgically repaired left knee.
The final four semifinal spots are up for grabs on Day 11, with Rafael Nadal, Maria Sharapova and Garbine Muguruza headlining on Chatrier.
Estonia's Anett Kontaveit has parted ways with coach Glenn Schaap and will begin a trial with Nigel Sears.
The German ran out of steam today but he's pleased with how far he came and what might come next.
Former No. 1 offers few answers after shattering quarterfinal upset.
"Are you sure [I won]? Maybe I am sleeping,” says world No. 72 after stunning upset.
Coach Patrick Mouratoglou says Serena Williams was only 80 percent in Paris.
