Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.Arkansas Derby April 13, 2012.