All three reigning Triple Crown race winners are scheduled to make their 4-year-old debuts in Florida this month. Belmont winner Ruler On Ice will face Preakness winner Shackleford in the Grade 1 Donn Handicap this Saturday at Gulfstream Park; both were assigned 119 pounds for the race, two fewer than highweight Flat Out. Later this month, trainer Graham Motion has tabbed the Grade 3 Tampa Bay Derby on grass on Feb. 25 as the return spot for Kentucky Derby winner Animal Kingdom before he heads to Dubai in March for the World Cup. Read on to see what these big-name 4-year-olds have been doing to prepare for their 2012 debuts, and look back on their 2011 triumphs. Animal Kingdom Graded Stakes Races Date Track Race Finish Chart Distance Time BSF Video 6/11/11 BEL Belmont Stakes 6th 1 1/2 mile 2:30.88 89 5/21/11 PIM Preakness 2nd 1 3/16 mile 1:56.40 103 5/7/11 CD Kentucky Derby 1st 1 1/4 mile 2:02.00 103 3/26/11 TP Spiral 1st 1 1/8 Mile 1:52.20 93 Workouts Horse Name Date Track Dist Time Surf Cond. B/H   Animal Kingdom 02/01/2012  PMM  5F  :59.61  Turf  Firm  B      01/25/2012  PMM  5F  :59.80  Turf  Good  B      01/17/2012  PMM  4F  :53.44  Turf  Firm  B      01/08/2012  FAI  4F  :50.40  Dirt  Fast  B      01/02/2012  FAI  4F  :49.00  Dirt  Fast  B      12/24/2011  FAI  3F  :38.00  Dirt  Fast  B    Ruler On Ice Graded Stakes Races Date Track Race Finish Chart Distance Time BSF Video 11/25/11 CD Clark Handicap 5th 1 1/8 mile 1:48.95 91 11/5/11 CD Breeders Cup Classic 3rd 1 1/4 mile 2:04.27 100 9/24/11 PRX Pennsylvania Derby 2nd 1 1/8 mile 1:47.34 101 8/27/11 SAR Travers 4th 1 1/4 mile 2:03:00 95 7/31/11 MTH Haskell 3rd 1 1/8 mile 1:48:20 92 6/11/11 BEL Belmont Stakes 1st 1 1/2 mile 2:30.88 100 5/7/11 PIM Federico Tesio 2nd 1 1/16 mile 1:45.60 83 3/27/11 SUN Sunland Derby 3rd 1 1/8 mile 1:50.80 86 Workouts Horse Name Date Track Dist Time Surf Cond. B/H   Ruler On Ice 02/05/2012  PMM  4F  :50.66  Dirt  Fast  B      01/21/2012  PMM  4F  :47.03  Dirt  Fast  B      01/14/2012  PMM  4F  :47.06  Dirt  Fast  B      01/07/2012  PMM  5F  :58.23  Dirt  Fast  B      12/31/2011  PMM  4F  :49.23  Dirt  Fast  B      11/18/2011  CD   4F  :48.60  Dirt  Fast  B    Shackleford Graded Stakes Races Date Track Race Finish Chart Distance Time BSF Video 11/5/11 CD Breeders Cup Dirt Mile 2nd 1 mile 1:34.59 103 10/01/11 HOO Indiana Derby 2nd 1 1/16 mile 1:43:60 95 8/27/11 SAR Travers 8th 1 1/4 mile 2:03:00 68 7/31/11 MTH Haskell 2nd 1 1/8 mile 1:48:20 96 6/11/11 BEL Belmont Stakes 5th 1 1/2 mile 2:30.88 91 5/21/11 PIM Preakness 1st 1 3/16 mile 1:56.40 104 5/7/11 CD Kentucky Derby 4th 1 1/4 mile 2:02.00 97 4/3/11 GP Florida Derby 2nd 1 1/8 mile 1:50.00 93 2/26/11 GP Fountain of Youth 5th 1 1/8 mile 1:50.20 58 Workouts Horse Name Date Track Dist Time Surf Cond. B/H   Shackleford 02/04/2012  GP   5F  1:01.40  Dirt  Fast  B      01/28/2012  GP   6F  1:12.20  Dirt  Fast  B      01/20/2012  GP   5F  :58.60  Dirt  Fast  B      01/13/2012  GP   5F  1:01.20  Dirt  Fast  B      01/07/2012  GP   4F  :50.80  Dirt  Fast  B