It seems year after year, the Derby trail has been dominated by horses from the A.P. Indy sire line, and this year that line once again makes a powerful presence, especially through his son Pulpit and Pulpit’s son Tapit.But so far, A.P. Indy’s sire-line influence has been a bit overshadowed by that of Fappiano, mainly through his son Unbridled. In ...