Former finalist Guillermo Coria has pulled out of the French Open with an elbow injury, organisers said on Monday.
A runner-up at the season's second Grand Slam in 2004, the 22nd-ranked Argentine has struggled with his form this season.
Australians Alicia Molik and Nathan Healey were awarded wildcards into the women's and men's draw respectively by the organisers.
World number 489 Molik won the bronze medal at the 2004 Athens Olympics and was ranked eighth in the world last February before being laid low for much of the season with an ear infection.
The French Open starts on Sunday.