FUKUOKA, Japan (AP) — Summer McIntosh is a big part of next year’s Olympic Games in Paris, and the 16-year-old Canadian proved it on the final day of the world championships in Japan.

McIntosh won her second gold of the competition on Sunday, winning the 400m medley after winning the 200m butterfly on Friday.

The young Canadian closed with a slog after finishing fourth in the 400m freestyle, an event in which she held the world record until Australian Ariarne Titmus took it away from her. He also won bronze in the 200 freestyle, although he was at least on the podium.

“My only intention was to see how far I could go,” McIntosh said.

And he did. His time of 4 minutes and 27.11 seconds was the third fastest ever, not far off his world record of 4:25.87. He was also defending the world title. American Katie Grimes took silver in 4:31.41, and Australian Jenna Forrester (4:32.30) took bronze.

“They really gave me a lot of motivation,” McIntosh said of the early days’ disappointment. “I try to make everything that goes wrong be a motivation.”

And Paris? “Right now, I want to take a break.”

McIntosh will be joined by other young swimming stars like Leon Marchand, a 21-year-old Frenchman, and Australian Kaylee McKeown, 22. Marchand and McKeown each won three gold medals in Fukuoka.

The United States rebounded strongly.

Después de ganar apenas cuatro oros en los primeros siete días, se llevaron tres en el octavo y último día del Mundial, para acumular siete oros y un grand total de 38. La cosecha total de oro no dejó de ser la más baja en los últimos 20 years. They barely got eight at the 2015 World Cup.

Australia finished with 13 gold medals and 20 overall. China won five gold medals and 16 in total.

“It was the icing on the cake,” said American Regan Smith, a member of the women’s 4x100m relay quartet that won gold.

The Americans won with a time of 3:52.08, followed by Australia (3:53.37) and Canada (3:54.12).

The United States also won the men’s 4×100 medley relay with a time of 3:27.20, ahead of China (3:29.00) and Australia (3:29.62), and added another with Hunter Armstrong (24.05 ) in the men’s 50m backstroke.

Sweden’s Sarah Sjostrom made history with her victory in the women’s 50m freestyle. The gold left Sjostrom with 21 individual world championship medals, leaving behind Michael Phelps’ 20.

Sjostrom, who set the world record in the semifinals on Saturday, sped over the final 25 meters for the win, clocking 23.62. Australian Shayna Jack (24.10) and Chinese Zhang Yufei 24.15 (complete the podium).

Lithuanian Ruta Meilutyte set a world record by winning the women’s 50m breaststroke with a time of 29.16. He had imitated the record the day before.

Meilutyte won almost wire by wire. The American Lilly King (29.94) and the Italian Benedetta Pilato (30.04) accompanied him on the podium.

Tunisian Ahmed Hafnaoui added the 1500m freestyle title to the other he won in the 800m freestyle, winning a thrilling final with American Bobby Finke.

Hafnaoui, 20, the reigning Olympic champion in the 400m freestyle, won the gold medal with a time of 14:31.54, beating Finke by five hundredths. Australian Sam Short (14:37.28) completes the podium. The mark fell short of the world record of 14:31.02 set by China’s Sun Yang in 2012. Sun is serving a doping suspension.