The build-up to the London 2012 Olympic Games has hit fever pitch in Jamaica, and Supreme Ventures has added to the excitement with the release of its highly anticipated sports betting odds, through its popular JustBet brand.

Odds are now out for the men's and women's 100m and 200m races; swimming, basketball, football and tennis. JustBet odds have also been released for the country to win the most medals, most gold medals and Jamaica's total medal count.

Probably the most anticipated event on the track and field calendar at the games, the men's 100m, sees defending champion and world record holder Usain Bolt revealed as the favourite at odds of 1.55 (or 11/20), followed by World champion and compatriot Yohan Blake (who defeated Bolt in both the 100m and 200m at the recently concluded Jamaican trials) at odds of 2.75 (or 7/4). Tyson Gay is favoured at odds of 15.00 (or 14/1), while Justin Gatlin is at odds of 25.00 (or 24/1). Asafa Powell is listed at odds of 30.00 (or 29/1).

In the men's 200m, Bolt is again the favourite at odds of 1.40 (or 2/5), followed by Blake at odds of 2.90 (or 19/10) and American Wallace Spearmon at odds of 18.00 (or 17/1).

In the women's 100m, defending champion and Jamaica's national record holder Shelly-Ann Fraser-Pryce is favoured at odds of 2.40 (or 7/5), while arch-rival and World champion, American Carmelita Jeter, is next at odds of 3.25 (or 9/4). Veronica Campbell-Brown is listed at odds of 6.00 (or 5/1), followed by Nigerian Blessing Okagbare at odds of 9.00 (or 8/1), Allyson Felix at odds of 12.00 (or 11/1), Kelly-Ann Baptiste at odds of 20.00 (or 19/1) and Kerron Stewart at odds of 40.00 (or 39/1).

In the women's 200m, Felix, the four-time World champion in the event, is the favourite to win gold at odds of 1.55 (or 11/20), followed by Jeter and defending Olympic champion Campbell-Brown, both at odds of 7.50 (and 13/2). Sanya Richards-Ross is listed at odds of 9.00 (or 8/1), as is Fraser-Pryce, who claimed the sprint double at the 2012 Jamaican Trials. Meanwhile, over on the football pitch, Brazil are favoured to win the men's gold medal at odds of 2.40 (or 7/5), followed by European and World Cup champions Spain at odds of 3.25 (or 9/4). Spain won the men's gold medal in the 1992 games held in Barcelona, while Brazil, surprisingly, have never won a men's Olympic gold medal in football. Other favourites are Uruguay at odds of 6.50 (or 11/2), Great Britain at odds of 10.00 (or 9/1), Switzerland at odds of 12.00 (or 11/1) and Mexico at odds of 15.00 (or 14/1).

The 2004 and 2008 gold medallists Argentina failed to qualify for the London 2012 Olympic Games. The country favoured to win most medals at the games is the USA at odds of 1.25 (or 1/4), followed by China at odds of 3.60 (or 13/5). The country favoured to win most gold medals is again the USA at odds of 1.55 (or 11/20), followed by China at odds of 2.30 (or 13/10). The odds for Jamaica winning 0 to 9 total medals is 15.00 (or 14/1); 10 to 12 medals at odds of 2.70 (or 17/10) and 13 to 15 medals at odds of 2.10 (or 11/10).