Laura Robson must deal with Centre Court pressure, says Barry Cowan.

If Andy Murray loses his third round match to Tommy Robredo today it will be even more of a shock than Roger Federer crashing out to world number 116 Sergiy Stakhovsky.

Injuries

Finally, I just want to raise a concern I've got. Twelve players have withdrawn from Wimbledon this year due to injury, however, on Thursday we saw Michael Llodra pull out of his match with Andrea Seppi with a hamstring injury when he was losing 7-5, 0-0, then go on to partner Nicolas Mahut in the doubles a few hours later. We saw a similar case a couple of days ago when Radek Stepanek withdrew when he was 6-2, 5-3 behind against Jerzy Janowicz on Wednesday and returned on Thursday to play in a doubles match. In both instances, although there's no doubt Llodra and Stepanek were hurting, they could have carried on and finished their matches. The players forced the Grand Slams into a corner and said 'unless you give us more money we'll boycott'. They're within their rights to do that because of what the Grand Slams money make. But players have a responsibility and when you have second round prize money of £38,000 for essentially two day's work - and there aren't too many people who were at Wimbledon watching the tennis yesterday who make £38,000 in a year, let alone in a day - then playing a singles match, retiring after a set and then coming back three hours later to play a doubles isn't on. It's not like the case with Victoria Azarenka or John Isner or Marin Cillic, who were all unfortunate and unable to continue. Clearly Llodra wasn't that bad he couldn't carry on.

Responsibility

If you're going down the line of arguing 'I'm a set down and I can't win' then why would Bobby Reynolds go on court at all against Novak Djokokvic? He knew he couldn't win, really. But there is a responsibility to the tour, to the fans who have queued up for hours to watch you play and all the people watching on TV to give your very best. Roger Federer is the perfect example of someone who realises this; he's never pulled out of a match in his career. If you're working a Monday-Friday, 9-5 job and you wake up on the Monday morning and you don't feel up for it, you can't just say 'ah, I can't be bothered today'. Everyone has days when they don't want to work, but you have to. Players need to be aware of where the money comes from and if the public start thinking 'these tennis players are soft' that takes away from the respect they've built up, especially over the last few years, with battling, five-hour long matches. Five hour matches are incomprehensible to a lot of people watching at home and that's why they've come to like tennis so much. The players must remember they have a responsibility to the fans.
Barry Cowan is raising money for the charity Have a Heart throughout Wimbledon with his Sky Bet Charity Bets. Find Barry's top daily and outright tips here.