First 2 in each heat (Q) and the next 2 fastest (q)

Heat 1 28 AUG 2011 18:55 Please click on a row below to view more information

POS BIB ATHLETE COUNTRY MARK Reaction Time
1 935 Allyson FELIX USA USA 50.36 Q 0.164
2 532 Novlene Williams-Mills JAM JAM 50.48 Q 0.364
3 768 Antonina Krivoshapka RUS RUS 50.55 q 0.214
4 892 Nataliia Pygyda UKR UKR 51.61 0.157
5 832 Moa HJELMER SWE SWE 52.35 0.208
6 407 Nicola Sanders GBR GBR 52.47 0.187
7 332 Maris Mägi EST EST 53.27 0.324
8 351 Fantu Magiso ETH ETH 53.41 0.387

Heat 2 28 AUG 2011 19:03 Please click on a row below to view more information

POS BIB ATHLETE COUNTRY MARK Reaction Time
1 959 Francena McCorory USA USA 50.24 Q PB 0.210
2 531 Shericka Williams JAM JAM 50.46 Q SB 0.216
3 972 Sanya Richards-Ross USA USA 50.66 q 0.209
4 503 Marta Milani ITA ITA 51.86 PB 0.181
5 166 Geisa Aparecida COUTINHO BRA BRA 51.87 0.183
6 395 Lee McConnell GBR GBR 51.97 0.256
7 258 Norma González COL COL 52.29 0.193
910 Antonina Yefremova UKR UKR DQ 0.164

Heat 3 28 AUG 2011 19:11 Please click on a row below to view more information

POS BIB ATHLETE COUNTRY MARK Reaction Time
1 163 Amantle MONTSHO BOT BOT 50.13 Q 0.368
2 529 Rosemarie Whyte JAM JAM 50.90 0.204
3 920 Jessica BEARD USA USA 51.27 0.267
4 795 Ndeye Fatou Soumah SEN SEN 52.10 0.300
5 300 Denisa Rosolová CZE CZE 52.53 0.166
6 1002 Racheal Nachula ZAM ZAM 53.30 SB 0.209
479 Joanne Cuddihy IRL IRL DQ -0.317
760 Anastasiya Kapachinskaya RUS RUS DQ 0.228