Canada's Summer McIntosh, 15, wins 2nd gold medal at world aquatics

Canadian swimmer Summer McIntosh capped her world championship debut with her second victory and fourth medal, lowering her junior record time to four minutes 32.04 seconds in the women's 400-metre individual medley on Saturday in Budapest, Hungary.

The 15-year-old McIntosh, who went 4:34.86 on April 9 at national trials, took the lead early in Saturday's race and battled throughout with American Katie Grimes, who touched the wall in 4:32.67 for her second silver of these worlds after placing second in the 1,500. Teammate Emma Weyant, the 2020 Olympic silver medallist, earned bronze in 4:36.00.

Katinka Hosszu of Hungary had her streak of consecutive world titles in the 400 medley halted at four as she finished fourth in 4:37.89. The 33-year-old has won the race five times in her last seven appearances at worlds and still holds the world record of 4:26.36 and 4:29.33 championship mark from 2016 and 2017, respectively.

Canada's women wrapped up the competition with bronze in the 100 medley relay, matching their result from 2019 worlds.

WATCH | McIntosh holds off American Katie Grimes for 4th world medal:

Kylie Masse, Rachel Nichol, Maggie Mac Neil and anchor Penny Oleksiak stopped the clock in 3:55.01, behind the Americans (3:53.78) and Australia (3:54.25).

Three years ago, Sydney Pickrem, Masse, Mac Neil and Oleksiak posted a time of 3:53.58 in Gwangju, South Korea.

Saturday's relay bronze was the national record-extending 11th medal — three gold, four silver, four bronze — for Canada at these worlds after it surpassed the mark of eight at a single world championships from 2019 on Friday.

Meanwhile, it was the second junior record in Budapest for McIntosh, who lowered her Canadian mark in the 200 butterfly on Tuesday to qualifying first for Wednesday's final that she won at Duna Arena. The Kelowna, B.C., native added silver in the 400 freestyle and bronze in the 200 free relay.

WATCH | McIntosh wins world 200m butterfly semifinal in junior record time:

McIntosh only led Grimes by 9-100ths of a second through 50 metres but was 62-100ths ahead midway through the backstroke leg and under world-record pace through 200 metres, in front by 1.33 seconds.

Hosszu gained ground in the breaststroke and moved into third spot at the 250-metre mark, with McIntosh holding a 2.15-second advantage over Grimes. But Weyant overtook Hosszu for bronze position through 300 metres and stayed there while Grimes closed to within 98-100ths of McIntosh with 50 metres remaining.

WATCH | McIntosh swims to world silver in 400m freestyle:

Last summer, a 14-year-old McIntosh was the youngest member of the Canadian Olympic team in Tokyo but certainly didn't show her age on the world's grandest athletic stage.