LOUISVILLE, Ky. – The Bob Baffert duo of American Pharoah and Dortmund are the favorites atop the fourth and final pool in the 2015 Kentucky Derby Future Wager that closed Sunday. When Pool 4 closed Sunday at 6 p.m. Eastern, American Pharoah was the 5-1 favorite, with Dortmund a close second choice at 6-1. Mubtaahij was next at 8-1, followed by Carpe Diem at 10-1 and the mutuel field, the 24th or “all others” option, at 11-1. Then came Materiality (12-1), Firing Line (13-1), Far From Over (14-1), International Star (17-1), Upstart (18-1), and Prospect Park (18-1). Easily the biggest odds shift for any horse during three days of wagering was for Mubtaahij, the impressive winner of the UAE Derby on Saturday; after Friday, the first day of wagering, the colt was 69-1. The other two prep winners Saturday dropped in less dramatic fashion: Materiality was 21-1 before winning the Florida Derby, and International Star was 22-1 prior to taking the Louisiana Derby. :: ROAD TO THE KENTUCKY DERBY: Prep races, point standings, replays The Baffert colts both have one prep remaining toward the May 2 Kentucky Derby at Churchill Downs: Dortmund runs Saturday in the Santa Anita Derby, and American Pharoah runs a week later in the April 11 Arkansas Derby. Carpe Diem runs Saturday in the Blue Grass Stakes. Combined handle for Pool 4, which had a three-day run with a Friday opening, was $417,673, with $273,017 bet to win and $144,456 in exactas. That amounts to an increase of 12 percent over combined handle for Pool 4 last year ($336,717). Aggregate handle for the four pools was $1,523,175, which not only was up 15 percent over last year but is the second highest since Churchill first offered pari-mutuel futures in 1999. The all-time record for handle in one year is $1,665,990, set in 2005. The lowest exacta will-pay combination is American Pharoah over Dortmund (1-7), worth $50.40 for $2. In the case of field horses filling both exacta slots, the next-best finish by a separately listed horse counts toward the winning combination. Pool 1 was held Nov. 28-30; Pool 2 from Feb. 6-8; and Pool 3 from Feb. 27-March 1. The field closed as the favorite in all three. Seven horses were separately listed in all four pools: American Pharoah, Carpe Diem, Daredevil, Dortmund, El Kabeir, Mr. Z, and Upstart. Kentucky Derby Future Wager Pool 4 FINAL ODDS (No.  Horse                          Trainer                P1               P2               P3     P4) 1. American Pharoah            B.Baffert            12-1           10-1           8-1             5-1 2. Ami’s Flatter                     J.Carroll              3-5(f)         5-2(f)         4-1(f)         91-1 3. Bold Conquest                  S.Asmussen        3-5(f)         5-2(f)         4-1(f)         91-1 4. Bolo                                   C.Gaines             3-5(f)         5-2(f)         34-1           28-1 5. Carpe Diem                        T.Pletcher           15-1           12-1          10-1           10-1 6. Daredevil                           T.Pletcher          48-1           40-1          43-1           39-1 7. Dortmund                          B.Baffert            9-1             10-1          9-1             6-1 8. Dubai Sky                          W.Mott               3-5(f)         5-2(f)         4-1(f)         23-1 9. El Kabeir                            J.Terranova        74-1           39-1          47-1           28-1 10. Far From Over                T.Pletcher           3-5(f)         5-2(f)         13-1           14-1 11. Far Right                          R.Moquett         3-5(f)        48-1          30-1           39-1 12. Firing Line                       S.Callaghan       3-5(f)          35-1          29-1           13-1 13. Frosted                             K.McLaughlin    38-1           31-1           4-1(f)         40-1 14. International Star            M.Maker            3-5(f)          44-1          22-1           17-1 15. Itsaknockout                             T.Pletcher          3-5(f)        30-1          30-1            53-1 16. Keen Ice                           D.Romans           3-5(f)         5-2(f)         27-1           69-1 17. Madefromlucky              T.Pletcher           3-5(f)         5-2(f)         4-1(f)         92-1 18. Materiality                       T.Pletcher           3-5(f)         5-2(f)         4-1(f)         12-1 19. Mr. Z                                W.Lukas             47-1          44-1          44-1           70-1 20. Mubtaahij                        M.deKock           3-5(f)         5-2(f)         4-1(f)         8-1 21. Prospect Park                  C.Sise                  3/5(f)         35-1          26-1           18-1 22. Upstart                             R.Violette          53-1          12-1          15-1           18-1 23. War Story                        T.Amoss              3-5(f)         5-2(f)         30-1           41-1 24. Field (all others)             n/a                     3-5               5-2           4-1             11-1 (f) – denotes field entry. Win pool: $273,017 Exacta pool: $144,456 Total: $417,673 Four-pool aggregate: $1,523,175