Roger Federer's £50,000 Nike shoes: Christie's auction serves up tennis ace's memorabilia

Proceeds will go to the sporting champion's foundation

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  A Christie's employee poses with Swiss tennis Roger Federer's racket used at the London Olympics 2012 at Christie's in London last month during a live auction.

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  A Christie's technician holds up one of Swiss tennis player Roger Federer's signed Champion tennis balls from Madrid, 2012 at Christie's in London.

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  A Christie's technician poses next to a model wearing Swiss tennis player Roger Federer's kit and racket used in the Davis Cup, 2014 on display, at Christie's in London.

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  Christie's technicians handle a signed Nike sneaker which is part of Swiss tennis player Roger Federer's champion kit worn at the French Open, 2009.

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  Christie's employees pose for photographers next to a mannequin wearing an outfit and racket used by Swiss tennis player Roger Federer during the 2009 French Open at the Christie's auction house, in London.

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  A Christie's employee poses with Swiss tennis champion Roger Federer's Nike Air Jordans shoes from the 2014 US Open at the Christie's auction house, in London.

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  A pair of training shoes worn by Roger Federer on display during "The Roger Federer Collection" auction photocall at Christies in London.

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  An assistant poses with Swiss tennis champion Roger Federer's cardigan and racket from Wimbledon 2012 (left) and rackets from the Olympics 2012 (right) during a photocall at Christie’s auction house in central London.

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  A Christie's employee poses with Swiss tennis Roger Federer's outfit used at the US Open 2018 at the Christie's auction house, in London.

Fans of tennis star Roger Federer will soon have the opportunity to own valuable mementos from his incredible career.

The 20-time Grand Slam champion is auctioning off a chunk of memorabilia to raise funds for the Roger Federer Foundation, which aims to give vulnerable children in southern Africa and Switzerland access to a quality education.

A live auction is taking place at Christie's London on June 23, with an online auction running from June 23 to July 14.

The auction will feature 20 lots from his Grand Slam victories, while a further 300 lots will be part of the online offering.

"I started to keep these items from the early days [onwards] with hopes of, one day, doing something that can help make a difference in the world," Federer said.

The items include a racket bag and shirt from the 2006 Wimbledon tournament, where Federer defeated Rafael Nadal in the final to claim his fourth consecutive Wimbledon crown. The estimated price is £15,000-25,000.

Wimbledon victories

Federer made it five in a row the following year and an outfit and Wilson racket from this success is estimated to go for £30,000-50,000.

There's also a pair of "Darth Federer" Nike night sneakers from the 2007 US Open which are expected to raise £15,000-25,000, and another pair of signed Nike shoes are set to raise £50,000-70,000.

The online auction items include outfits, bags, headbands and a classic Wimbledon tournament towel.

Christie's low estimate values the entire collection at £1 million.

An assistant poses with Swiss tennis champion Roger Federer's Nike Air Jordans from the 2014 US Open. AFP