Bob Bryan got married in 2010 at the age of 32, forcing a breakup of sorts with twin brother Mike. They had lived together their entire lives, growing up in California and settling in Tampa, Fla., as pros.
"I moved to Miami with my wife, then we had to kind of do a Monopoly deal, split up the assets, clothes and everything," Bob said. "It's been quite a change, but we're growing up. I've got a family now.''
The Bryans - the most successful pairing in men's tennis history - will play the doubles match for the U.S. on Saturday at Taco Bell Arena as part of the Davis Cup quarterfinal tie against Serbia.
They won a record 13th major earlier this year by collecting their sixth Australian Open trophy. They have won a record 86 titles on the ATP World Tour. And they have dominated in Davis Cup play with a 20-3 record.
"It's a pain playing them," said U.S. singles player Sam Querrey, who is 0-7 against the Bryans with Davis Cup teammate John Isner.
The Bryans' parents were tennis instructors who wouldn't let them compete against each other in tournaments when they were young. The boys began playing at 2 and competing at 6 - sticking together through high school and college (two team NCAA titles in two years at Stanford). They spent a season on the Idaho Sneakers World TeamTennis squad in Boise in 1999, too.
"I've seen him in every situation," Bob said. "I kind of know what to say to him. A lot of times we do our best when we don't speak too much. Kind of that unspoken language. When we're not speaking, just flowing on the court, that's when we're really good.
"We're having a lot of fun out here together. This is what we were born to do is play doubles. Being twins just makes it that much easier."
The Bryans are fantastic players on their own as well. Bob was No. 1 in the U.S. Boys' 18s in 1996 (Mike reached as high as No. 3) and won an NCAA singles title in 1998.
But they decided early in their careers that they would not pursue singles. They have played a combined 77 singles matches on tour and more than 1,000 doubles matches.
One reason: The brothers wanted to protect their schedules for up to four Davis Cup ties a year and the Olympics. They won a Davis Cup championship in 2007 and an Olympic gold medal in 2012.
"We liked winning and sharing victories together and we've always had more fun playing doubles, just sharing all those experiences together," Bob said.
That bond has taken on a different form the last few years. Mike married in November and lives primarily in California - putting the brothers' homes on opposite coasts.
They still travel together for 40 weeks a year, but the other three months are spent training separately.
Bob has a daughter, 1-year-old Micaela.
"We're as tight as we've ever been," Bob said. "When I'm at home and I do something - I go to a Miami Heat game - I always call him and tell him what's going on. We still share what we're doing, our every-day experiences, but my family is my No. 1 priority."
Who: Bob and Mike Bryan (U.S.) vs. Nenad Zimonjic and TBA (Serbia), 1 p.m. (Serbia has not committed to a partner for Zimonjic and has until an hour before the match. Viktor Troicki was the most likely before he went five sets Friday. Novak Djokovic, who rarely plays doubles, said he's in the mix).
Rankings: The Bryans are co-No. 1s, Zimonjic is No. 22
This season: The Bryans are 20-3 (won Australian Open); Zimonjic is 11-6
Career doubles titles: The Bryans have 86 (13 majors), Zimonjic has 47 (3 majors)
Davis Cup records: The Bryans are 20-3 as a team; Zimonjic is 26-11
Quotable: "Playing Bob and Mike, it's definitely the biggest challenge that I will have in my Davis Cup career. ... Even though they are favorites, I think we still have a chance in that match." - Zimonjic
Head-to-head notes: In the only previous U.S.-Serbia tie, Bob Bryan and John Isner (Mike was sick) beat Zimonjic and Janko Tipsarevic.
The skinny: The Bryans and Zimonjic, a former doubles No. 1, have been dueling throughout their careers, so strategic adjustments could play a role. Expect inspired tennis from the Bryans, who are coming off a rare Davis Cup loss in February.
Tennis still plays a major role, too.
The Bryans, 34, don't have a firm plan but have targeted the 2016 Olympics as a minimum. They'll be 38 in Rio de Janeiro.
"It might be more, it might be less," Bob said.
However long they go, they'll almost certainly be part of the Davis Cup.
And this match in Boise likely will be a memorable one for them.
They suffered their third Davis Cup loss in February in Florida against underdog Brazil - on the tail end of celebrating that record-setting win in Australia.
"We were looking forward to playing this tie right when we lost that match in Jacksonville," Mike said. "We want to do our teammates and country proud. Basically just do our job. We're itching to go and want to redeem ourselves."