Andy Murray's achievements in tennis are "ridiculous" according to the new world number one's brother Jamie Murray.

The duo are in London this week to play in the ATP Tour Finals, with Andy fresh from having climbed to the top of the world rankings by winning the Paris Masters.

Jamie underlined just how much his brother has achieved in the sport, highlighting the era of tennis he has fought through to get to the top.

Andy's success has led to him being called Scotland's greatest ever sportsman by Sir Chris Hoy, with figures from the world of sport and beyond lining up to praise him.

"I think he gets a lot of recognition," said Jamie. "The last few years people have been aware of the achievements he has done, how difficult it has been to be as successful as he has been in this era of tennis.

"We didn't play in other eras, but for me you have the four potentially greatest players of all time playing. I think he has made 11 grand slam finals which is an insane achievement. Of course he hasn't won them all, but playing them is ridiculous really.

"We are in our own bubble, we are travelling the world all the time and it is just tennis, tennis, tennis. But when we come back here and up in Scotland, you do start to realise how popular and how big a name he is.

"But he should be - he has done incredible things for himself and for tennis in this country. He deserves all the accolades he gets."

Andy starts his Tour Finals campaign at the O2 in London against Marin Cilic on Monday evening, with Jamie getting under way with partner Bruno Soares on Sunday.