Andy Murray had regular feuds with Jamie during their childhood says mother Judy

Andy Murray has forged a close bond with his brother and Davis Cup team-mate Jamie, but their mother admits the pair squabbled regularly as youngsters.

The Murray brothers will carry British hopes in next month's Davis Cup final against Belgium, starting on November 27 in Ghent.  

They forged a successful doubles partnership in the semi-final win over Australia, with younger sibling Andy sealing victory with a singles win over Bernard Tomic.

But the duo did not have such a harmonious relationship during their childhood and mother Judy has joked how the pair's fierce competitive nature often led to physical clashes.

She told CNN's Open Court show: "It didn't matter what it was; cards, dominoes, monopoly, golf or football, they were always competing with each other.

"They had a lot of fun as well as a lot of fighting. They made up their own games and they made up their own scoring systems and their own rules.

"I can't say they even played or trained a lot of tennis together because they didn't manage to last half an hour without fighting with each other!"

Both Murrays have forged successful careers as Andy is currently ranked at No 3 in the world with two Grand Slam trophies to his name, while Jamie also possesses a major title after winning the Wimbledon mixed doubles in 2007 and reached this year's men's doubles final at the US Open.

The siblings played in the same singles tournaments in their younger years and Judy recalls a fiery post-match exchange between the pair.

"The story that always springs to mind was when they played against each other at a tennis tournament," she said. "I had taken a lot of children down from Scotland. I'm driving back in the mini-bus, it's quite dark and Andy has beaten Jamie in the final of this U12 event.

"They start having a fight in the back of the mini bus. Andy's hand is over the back seat and eventually Jamie has taken enough and nails his fist into Andy's hand.

"There was blood and I had to stop the bus, we dress the wound, separate them and drive the few hours back.

"We had to take Andy for a tetanus shot because the nail was ripped and the nail has never grown in straight. But it's a reminder about being humble and never bragging about beating anyone, especially your brother!"

But Andy is hugely supportive of Jamie, often watching him from the stands and sends out congratulatory messages on social media.

"Jamie is without question Andy's number one fan," said Judy. "They are the only people I think of who can really say what they are thinking straight to each other's face. There are not that many people who can do this, particularly with Andy nowadays."