LONDON -- The boys from Dunblane haven't half done bad.
"I think we're probably each other's biggest fans," Andy Murray said Friday when asked about his brother Jamie Murray's achievement of finishing as year-end doubles No. 1 with Bruno Soares.
The camaraderie has been there between them from the youngest of ages, when they grew up competing against each other with any piece of sports apparatus they could get their hands on.
"When we were really young, Jamie would have won most things we did," said Andy. "He was 15 months older, so he was bigger and stronger and better than me at most things. He was smarter than me.
"Then as we started to get older and physically were on more of a level playing field, we were pretty close really at most things. Jamie is a really good golfer. He was better at that. Football, probably me. Then squash and table tennis, more of the racket sports, was pretty close between the two of us really."
Andy added, laughing: "Well, that's my recollection of it. He might say something a bit different. That's what I remember."
Jamie has largely had to deal with his brother getting most of the spotlight ever since they went their separate ways in their early teens. The elder Murray headed to Cambridge for nine months and then Paris, with Andy going off to Spain when he was 15.
While Andy's talents as a singles player flourished, culminating in his rise to world No. 1 with three major titles to his name, Jamie has risen to the top of the men's doubles rankings with two of his own slams. Jamie also beat Andy to a first Wimbledon title, winning the mixed doubles with Jelena Jankovic in 2007.
Throw in the Davis Cup they helped Britain win together last year, and the Murray family is British tennis royalty.
Now, the brothers' march toward tennis history continues apace at the World Tour Finals.
Jamie was confirmed Friday as the year-end doubles No. 1 with partner Soares after Nicolas Mahut and Pierre-Hugues Herbert lost their final round-robin match.
It capped off a sensational 2016 for the Scot and the Brazilian. Neither man had won a men's doubles slam before they claimed the Australian Open together, having only come together at the beginning of 2016. They also went on to win the US Open.
"They had an amazing year. They deserve it," Andy continued. "It's a great achievement for both of them and I'm very proud of Jamie.
"It's really special to get to watch what he's achieved in the biggest competitions in the sport. Neither of us ever would have expected this when we were growing up. We need to try and enjoy it."
Whether Andy finishes the season on top of the singles rankings is still undecided. He has reached the semifinals here for the first since 2012 with Milos Raonic awaiting him.
But he could yet see the No. 1 spot snatched away from him this week, should Novak Djokovic outperform Murray.
The Serb faces Kei Nishikori in the other singles semifinal Saturday. Should he and Murray both win their matches, Sunday would be the first time in the history of the Tour Finals where the two finalists would not only be playing for the championship but the year-end No. 1 ranking.
"The whole year has been fantastic for both of us," Andy added of his brother. "We would like to finish it perfectly if we can. Still there's a good chance that doesn't happen.
"Regardless of what happens over the weekend, we can look back on this year and be very proud of what we've done as a family."