Otylia Jedrzejczak won the women's 200 metres butterfly final at the Athens Olympics on Wednesday to become Poland's first Olympic swimming champion.

Jedrzejczak finished in a time of two minutes 06.05 seconds, outside the world record of 2:05.78 that she set at the 2002 world championships.

Australia's Petria Thomas was second in 2:06.36 to add a silver to the golds she won in the 100 metres butterfly and 4x100 freestyle relay, while the bronze went to Japan's Yuko Nakanishi in 2:08.04.

Jedrzejczak, 20, won silver medals in the 400 freestyle and 100 butterfly in the space of an hour on Sunday.