In this new TDN column, Christie DeBernardis will tell the stories of accomplished and/or popular former racehorses who are now enjoying second careers as show horses, track ponies, etc. Champion sprinter Whitmore (Pleasantly Perfect) and Laura Moquett's relationship goes back to when he was just a 2-year-old who refused to go around the racetrack without some coaxing. Fast forward seven years and that cantankerous juvenile is now an Eclipse winner and Breeders' Cup winner and has been retired from racing as Moquett's personal riding horse. On Thursday, less than 13...