Weak or strong they IMHO just want a little more grass in their legs - here is the doubles draw where you can see they will get a tough start and might not survive first round:
HINGIS, Martina SUI/MIRZA, Sania IND v KRAJICEK, Michaella NED/ PLISKOVA, Karolina CZE
GROENEFELD, Anna-Lena GER/ROSOLSKA, Alicja POL v CHAN, Hao-Ching TPE/PENNETTA, Flavia ITA
GARCIA, Caroline FRA/SREBOTNIK, Katarina SLO v JANS-IGNACIK, Klaudia POL/KLEPAC, Andreja SLO
DUSHEVINA, Vera RUS/MARTÃNEZ SÃNCHEZ, MarÃa José ESP v RAE, Jocelyn GBR/SMITH, Anna GBR
MEDINA GARRIGUES, Anabel ESP/PARRA SANTONJA, Arantxa ESP v GOERGES, Julia GER/HRADECKA, Lucie CZE
CHAN, Yung-Jan TPE/ZHENG, Jie CHN v BABOS, Timea HUN/ MLADENOVIC, Kristina FRA
BLACK, Cara ZIM/RAYMOND, Lisa USA v KVITOVA, Petra CZE/ WOZNIACKI, Caroline DEN
BOUCHARD, Eugenie CAN/ERAKOVIC, Marina NZL v MAKAROVA, Ekaterina RUS/VESNINA, Elena RUS