Kate Ziegler (The Fish, Great Falls, Va.), coached by Ray Benecki, continued her record-breaking ways at the Toyota Minnesota Grand Prix on Saturday, setting a Minnesota pool record in 4:35.00 over 500 yards short-course.

'I didn't know I was going to break the record. It's very exciting and I was pleased with my swim. We've been training really hard,' said Ziegler, who kept at bay Flavia Rigamonti, the US-based Swiss rival who took silver behind her over 1,500m freestyle at the world championships in Melbourne last March. Rigamonti clocked 4:41.61, with Lakeside's Rachel Komisarz (Louisville, Ky.) third in 4:43.25.

Results:

Women

50 freestyle: 1. Jessica Hardy 22.38 secs, 2. Rachel Komisarz 22.48, 3. Kara Lynn Joyce 22.79
500 freestyle: 1. Kate Ziegler 4:35.00, 2. Flavia Rigamonti 4:41.61, 3. Rachel Komisarz 4:43.25
100 backstroke: 1. Mary Descenza 54.24, 2. Kaitlin Sandeno 54.25, 3. Roxane Akradi 56.45
200 breaststroke: 1. Keri Hehn 2:10.48, 2. Michelle McKeehan 2:14.96, 3. Kait Strickland 2:19.60
400 individual medley: 1. Kaitlin Sandeno 4:13.54, 2. Jenny Shaughnessy 4:21.03, 3. Kait Strickland 4:23.04
Men
50 freestyke: 1. Simon Burnett 20.04, 2. Kicker Vencill 20.49, 3. Peter Verhoef 20.60
500 freestyle: 1. Peter Vanderkaay 4:19.98, 2. Ryan Lochte 4:24.14, 3. Chad La Tourette 4:24.84
100 backstroke: 1. Peter Marshall 46.22, 2. Ryan Lochte 46.44, 3. Chris DeJong 48.37
200 breaststroke: 1. Adam Ritter 1:56.40, 2. Giordan Pogioli 1:59.09, 3. Scott Usher 1:59.80
400 individual medley: 1. Ian Clark 3:51.16, 2. Tim Liebhold 3:54.37, 3. Charlie Rimkus 3:57.38