Kassidy Cook said it starts with the basics. She and Sarah Bacon have similar diving styles, techniques and body types, the foundation necessary for any synchronized diving tandem to become mirror images of each other.
It's their unity on dry land, though, that could carry them to the Olympics.
Bacon, the former Gophers diver, and Cook, a 2016 Olympian, have been friends for more than a decade. They hang out together. They buy matching clothes. Even their names — now a Twitter hashtag, #CookNBacon — suggest a pairing that was meant to be.
"We've known each other since we were 10 years old," Bacon said. "If you can find a partner where you get along with them and have fun with them, it just makes synchro and diving way more enjoyable."
The reigning national champions, Bacon and Cook will start this week's U.S. Olympic trials as a duo, competing in Sunday's preliminaries of the women's 3-meter synchronized event. Tuesday, Bacon will go solo, in the prelims of the women's 3-meter individual in her hometown of Indianapolis.
Cook, who has a shoulder injury, also will dive in the individual event if she is healthy enough. Should that happen, the two said they would be cheering for each other, as they have since their early days on the pool deck.
"A very important part of this for me and Sarah is having a good friendship," said Cook, a 10-time national champion from The Woodlands, Texas. "We've always been really close, and we're even closer now.
"When I'm up there with her, I not only want to do well for myself. I also want to do well for her. Having that kind of chemistry is really important."