The United States won three medals – two gold and a silver – Tuesday to open the 7th FINA World Junior Championships in Budapest, Hungary.

The two gold medals came in the relays, with Jake Magahey, Luca Urlando, Adam Chaney and Carson Foster taking the men’s 400m free relay in 3:15.80, a world junior record. The former mark stood at 3:16.96, set by Australia in Dubai in 2013.

Finishing second behind the Americans were Russia in 3:16.26 and Italy in 3:16.29.

“The first night you always want to get the ball rolling, really set the momentum for the rest of the meet, and we know how important that relay is to the U.S., so to come out with a gold, and on top of that world junior record, is super exciting,” Foster said.

Then Lillie Nordman, Erin Gemmell, Juntina Kozan and Claire Tuggle won gold in the women’s 800m free relay in 7:55.49. They touched the wall more than two seconds ahead of the rest of the field. Australia was second in 7:57.87, while Canada was third in 8:01.14.

“It felt amazing,” Gemmell said. “Being with three other people while you win is so much better, I think, than being alone because you have all these people you’ve done it with and then you get to stand up there with those people instead of just alone. It’s just an amazing experience.”

Isabel Gormley won the United States’ third medal, a silver in the women’s 400m IM. Gormley turned in a personal best of 4:39.15, dropping almost five seconds from her previous best time of 4:44.01 in prelims. Alba Ruiz of Spain was first in 4:38.53. Michaella Glenister of Great Britain was third in 4:39.35. Gormley’s American teammate, Grace Sheble, finished seventh in 4:45.41.

“I had no expectations,” Gormley said. “I really wanted to medal tonight, but I had no idea I was going to drop five seconds. That was amazing. Such an amazing race to go with (Ruiz). She was amazing to race, but I’m really happy right now. This has been the best meet of my life, and it’s only day one. It’s my last race, but I could not be happier and I’m really excited to see what everyone else does this week.”

Other finalists for the U.S. on day 1 were Jake Mitchell, who finished fourth in the men’s 400m free in 3:47.95, and Jake Magahey, who finished eighth in the men’s 400m free in 3:51.19.