If she wins tomorrow, she'll lose it.
If she loses tomorrow, she'll have to play two matches on Sunday.
At least, that's what normally happens.
Same with Cara Black, who is still in the doubles.
Good Luck: RENA, MATTEK, HAYNES, GULLICKSON, HARKLEROAD, RUBIN, GRANVILLE, LEE-WATERS, SCHNYDER, JACKSON, PERRY, KING, SUGIYAMA, PIERCE, TULYAGANOVA, IVANOVIC, KUZNETSOVA, MOLIK, DANIILIDOU, MEDINA GARRIGUES, PETROVA, PENNETTA, GOLOVIN, PEER, LI, SCHIAVONE, RAZZANO, ZVONAREVA, SPREM, SREBOTNIK, VINCI, & SAFINA