Among men not scheduled to play are Mark Philippoussis (knee), Taylor Dent (back surgery), and Gustavo Kuerten (hip).
"I'm very disappointed, but unfortunately, following my back injury, I haven't recovered all my physical strength," Davenport, who has been suffering from lower back strain since she lost the Wimbledon final to Venus Williams last season, said in a statement. "I am working hard to come back as quickly as possible to the court."
"It is very sad that I will miss Roland Garros," Kuerten said. "But I will be working hard these next weeks and I expect to be competing again in July."