Andrew Castle hails Roger Federer's longevity

Roger Federer in the ATP Finals semi-final against Andy Murray
© PA Photos
Andrew Castle lauds Roger Federer's competitive spirit and ability to fight at the top of men's tennis into his 30s.

Former British number one Andrew Castle has declared that Roger Federer has been able to stay at the top of men's tennis thanks to his competitive spirit and enduring love for the sport.

Federer won at Wimbledon last year aged 30 and the 17-time Grand Slam champion continues to be ranked among the top three players in the world.

Castle thinks that Federer has been spurred on to stay at the top level by his rivalries with Andy Murray, Rafael Nadal and Novak Djokovic.

He told BBC Sport: "Thirty-one years of age is quite old to be a world class tennis player.

"He clearly works extremely hard and never gets injured. It's the freshness. He just loves the game.

"He may be a third of a step slower than he was five, six, seven years ago but he's flourished with the rivalry of Nadal, Djokovic and Murray and that rivalry has reinvigorated him. It's thrilling to see him competing against the younger guys."

Federer goes up against Murray in the Australian Open semi-finals this morning for the right to play Djokovic in Sunday's final.

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ATP RankingsPoints
1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060