The 139th annual running of the Kentucky Derby is just around the corner.

On Saturday, May 4, 20 jockeys and three-year-old thoroughbreds will compete in the first leg of the Triple Crown.

With 7/2 betting odds, Orb has been named the favorite to win the 2013 Derby. At the No.16 post, the horse is led by trainer Shug McGaughey and jockey Joel Rosario. Only four horses have been victorious from that position, though Animal Kingdom won the race at No.16 just two years ago.

Orb’s four-race winning streak makes him the slight favorite over Verrazano. The horse that drew the No.14 position enters the race undefeated.

Besides Verrazano, trainer Todd Pletcher will have four other horses running at Churchill Downs, tying a Derby record. Pletcher also trains Revolutionary, who has the fourth best odds at 10/1.

Doug O’Neill trained last year’s winner, I’ll Have Another. In 2013, he has a good chance to be a on the winning side, once again. He trains Goldencents, whose odds have been set at 5/1.

Four Horses are tied for the worst odds at 50/1. Black Onyx, who drew the No.1 post position, leads the group of longshots.

Below is the complete field for the 2013 Kentucky Derby, as well as the post positions and official betting odds from Churchill Downs.

Post Position      Horse                                 Odds

1                        Black Onyx                          50/1

2                        Oxbow                                 30/1

3                        Revolutionary                      10/1

4                        Golden Soul                         50/1

5                        Normandy Invasion            12/1

6                        Mylute                                 15/1

7                        Giant Finish                         50/1

8                        Goldencents                         5/1

9                        Overanalyze                        15/1

10                      Palace Malice                      20/1

11                      Lines of Battle                     30/1

12                      Itsmyluckyday                    15/1

13                      Falling Sky                         50/1

14                      Verrazano                          4/1

15                      Charming Kitten                20/1

16                      Orb                                      7/2

17                      Will Take Charge               20/1

18                      Frac Daddy                        50/1

19                      Java's War                         15/1

20                      Vyjack                               15/1