Sports betting odds for the top tennis players competing at the O2 Arena in London

Sports betting is hotting up ahead of the ATP World Tour Finals which are taking place at London's O2 Arena from Sunday (November 22nd).

Novak Djokovic, Roger Federer and Andy Murray are the favourites to win the end of season event, which involves the top eight players battling to become ATP World Tour Champion.

Tennis fans wanting to have a go at online betting in Canada can get odds of 5-2 for Djokovic, 3-1 for Federer and 4-1 for Murray via 888sport.

The Serb is unsurprisingly favourite for the tournament as he has finished the season strongly, adding a couple of titles to his name.

Last week, he lifted the BNP Paribas Paris Masters trophy, beating Frenchman Gael Monfils in a closely-contested final, 6-2, 5-7, 7-6 (3).

In the semi-finals, he thrashed world number two Rafael Nadal 6-2 6-3 and the week before he toppled number one-ranked Federer at his home tournament in Basel, Switzerland, beating him 6-4, 4-6, 6-2 in the final.

Andy Murray has also had a decent run of form since returning to the tour following a wrist injury which put him out of action for six weeks. He won the first tournament he had played in since the US Open, beating Russia's Mikhael Youzhny in straight sets in the final.

Sports betting fans may want to go for Juan Martin del Potro, for whom they can get odds of 8-1 with 888sport. It has been a breakthrough year for the 21-year-old Argentinean, as he beat Federer in a dramatic US Open final to win his first grand slam.

However, he has struggled since, twice retiring from Masters 1000 events in Shanghai and last week in Paris.

Nadal is also an outside shot when it comes to sports betting, with 7-1 odds. He has five titles to his name this year, but has continued to struggle with the stomach injury which prevented him from defending his Wimbledon title.

Nevertheless, he has made the final and semi-final of the last two Masters 1000 tournaments, so cannot be discounted.