The women's 100 metre breaststroke event at the 2002 Commonwealth Games as part of the swimming programme took place on 2 and 3 August at the Manchester Aquatics Centre in Manchester, England.

Records Prior to this competition, the existing world, Commonwealth and Commonwealth Games records were as follows.

Results

Heats Heats were held on 2 August. Rank Heat Lane Name Nationality Time Notes 1 2 5 1:09.46 Q 2 1 4 1:09.82 Q 3 3 5 1:09.93 Q 4 3 4 1:09.94 Q 5 2 4 1:10.60 Q 6 1 3 1:10.78 Q 7 1 5 1:10.87 Q 8 3 3 1:11.28 Q 9 2 3 1:11.44 Q 10 3 6 1:11.95 Q 11 1 6 1:12.58 Q 12 2 6 1:13.72 Q 13 2 2 Siow Yi Ting 1:14.08 Q 14 1 2 1:14.35 Q 15 3 2 1:14.36 Q 16 3 7 1:15.96 Q 17 1 7 1:17.33 18 2 1 1:18.89 19 1 1 1:26.51

Semifinals The semifinals were held on 2 August.

Rank Heat Lane Name Nationality Time Notes 1 1 5 1:08.31 Q 2 2 5 1:09.00 Q 3 1 4 1:09.19 Q 4 2 4 1:09.75 Q 5 2 3 1:09.95 Q 6 2 2 1:10.44 Q 7 2 6 1:10.68 Q 8 1 3 1:10.92 Q 9 1 2 1:11.06 10 1 6 1:11.27 11 1 7 1:11.99 12 2 7 1:12.23 13 2 1 Siow Yi Ting 1:13.65 14 2 8 1:13.80 15 1 1 1:13.90 16 1 8 1:15.23

Final The final was held on 3 August. Rank Lane Name Nationality Time Notes 4 1:08.74 5 1:09.10 2 1:09.29 4 3 1:09.63 5 6 1:09.92 6 7 1:10.20 7 1 1:10.61 8 8 1:11.45

References