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Victoria Poon clocked 25.12 seconds in the 50-metre freestyle, trimming her previous national mark of 25.35 set last month at the Canada Cup. ((Paul Chiasson/Canadian Press))

Brent Hayden, Victoria Poon and Matt Hawes overcame the elements to set national records on Saturday in Montreal as the Canadian swim team heading to Rome for the world championships was finalized.

Hayden swam under 22 seconds for the first time in his career in the 50-metre freestyle in the outdoor pool at Parc Jean-Drapeau, touching at 21.94.

"It felt alright," Hayden told CBC Sports. "It wasn't really optimal conditions out here so the fact that I was able to come here and do that with the pouring rain and all that is really encouraging and I'm really excited to get to Rome and race it again and lower that time even more.

The Mission, B.C., native said he is still contending with a back injury but it won't stop him from going for it in Italy.

Poon lowered the Canadian women's 50-metre freestyle standard twice on the day, finishing in 25.06 seconds in the final. She shaved 6-100ths off her time earlier Saturday in the preliminaries.

"I really wanted to go under 25," she said. "It doesn't happen tonight, but surely it will happen one day."

Poon said she liked the approach Swimming Canada was taking this year, which involves the trials being held closer to the date of the worlds. The Rome championships take place from July 19 to Aug. 2.

Hawes shaved over a second off the Canadian record in the 200-metre backstroke with a time of 1:57.34.

"It was all about confidence," Hawes said. "I just knew I had a 1:57 in me, I knew I could do it. It had nothing to do with speed or strategy or anything else."

In addition to Hayes, local product Barbara Jardin, Toronto's Savannah King, Lauren Lavigna of Vancouver, Regina's Erica Morningstar and Julia Wilkinson of Stratford, Ont., were the final six swimmers to punch their ticket to Rome on Saturday.

"We have a young team, and that's good because one of the purposes was to get ready for 2012," said Swimming Canada head coach Pierre Lafontaine. "This is really about the next 150 weeks preparing for the Olympics. This will be a good stepping stone."

The trials concluded with 13 Canadian records set, with 15-year-old Amanda Reason of Etobicoke, Ont., setting a world record of 30.23 seconds in the 50-metre breaststroke on Wednesday.

With files from The Canadian Press