The big four in men's tennis are expected to battle it out for the grass-court crown this year, refelected in the Wimbledon betting.
Roger Federer was victorious in 2012, which was his seventh Wimbledon title, and is in good form going into this year's event. The Swiss ace collected his sixth Halle success earlier this month and the SW19 grass courts now seem his best chance of adding another Grand Slam title to the 17 he has already won.
But the betting promotions on offer will show that Federer's main rivals - Novak Djokovic, Andy Murray and Rafael Nadal - are more fancied to lift the trophy on July 7.
Djokovic heads into the tournament as the top seed and still world number one, as he goes in search of his second Wimbledon title. The Serbian is not in the form of last year, but already has the Australian Open crown to his name this year.
Many of the patriotic punters looking at the Wimbledon betting will again be looking to Murray to end a 77-year wait for a British men's singles winner. After his success at Queen's Club, many betting promotions will be available on the Scot finally breaking the home jinx in south-west London.
Nadal heads to Wimbledon after collecting yet another French Open success and is now seemingly over his injury problems. Some eyeing the Wimbledon betting markets maybe concerned about fatigue, but the Spaniard is strong enough to go go the distance in another Grand Slam event.
It's highy unlikely, but if there was to be a surprise winner outside of the top four - France's Jo-Wilfried Tsonga seems the most likely, while Juan Martin del Potro could go deep into the tournament.
The women's event is far more open, although the Wimbledon betting markets suggest Serena Williams is the one to beat again in 2013.
The American is a five-times singles winner at Wimbledon and has won three of the last four ladies singles titles - including a hard-fought success over Agnieszka Radwanska last year.
Williams' main challenge is likely to come from the players ranked two and three in the world standings - Victoria Azarenka and Maria Sharapova. Sharapova's Wimbledon record suggests she might be worth taking advantage of in the betting promotions for the third Grand Slam event of the year.