If Andy Murray and Roger Federer both make it through to the Wimbledon final, Oxfam may find itself at odds with the rest of the nation on Sunday - the charity stands to make more than £100,000 if the Swiss player wins.

Oxfordshire man Nicholas Newlife died in 2009, leaving his estate, including a series of betting slips, to the charity. That included a £1,520 wager at 66/1 on Federer to win Wimbledon seven times before 2020, which could net the charity £101,840.

Federer has previously won the tournament in 2003, 2004, 2005, 2006, 2007 and 2009.

The 30-year-old is currently the world number three and his last grand slam tournament win was the Australian Open in 2010.

In 2010 the charity won £16,750 from Newlife’s £250 bet that Federer would win 14 grand slam titles by 2020.

The legacy also included two separate bets on Andy Roddick to win seven and ten grand slam tennis titles by 2020. So far he has won just one – the 2003 US Open. He is 29 and his current world ranking is 30.

Newlife placed a further three separate bets on Ramnaresh Sarwan to make 7,000, 8,000 and 9,000 test match runs by 2019. The West Indian batsman has so far scored just under 6,000 test match runs.

The total possible winnings for the charity, including earlier successes, is £338,565. Oxfam raises between £12m and £13m each year from legacies. 

In the Wimbledon men’s singles semi-finals today Federer will play defending champion Novak Djokovic and Murray faces Jo-Wilfried Tsonga.