Rachel Alexandra finishes 2009 with five Grade I wins - Woodward, Haskell, Mother Goose, Preakness, and Kentucky Oaks.

How does that compare with the other Horse the Year winners from this decade?

2008 Curlin - 4: Jockey Club Gold Cup, Woodward, Stephen Foster, Dubai World Cup
2007 Curlin - 3: BC Classic, Jockey Club Gold Cup, Preakness
2006 Invasor - 4: BC Classic, Whitney, Suburban, Pimlico Special
2005 Saint Liam - 4: BC Classic, Woodward, Stephen Foster, Donn
2004 Ghostzapper - 2: BC Classic, Woodward
2003 Mineshaft - 4: Jockey Club Gold Cup, Woodward, Suburban, Pimlico Special
2002 Azeri - 5: BC Distaff, Lady's Secret, Vanity, Milady, Apple Blossom, Santa Margarita
2001 Point Given - 5: Travers, Haskell, Belmont, Preakness, Santa Anita Derby
2000 Tiznow - 2: BC Classic, Louisiana Super Derby

Note that five horses on the list won the BC Classic and four won the Woodward. The Derby has not produced a Horse of the Year since Charismatic in 1999.