In this new TDN column, Christie DeBernardis will tell the stories of popular and/or accomplished former racehorses who are now enjoying second careers as show horses, track ponies, etc. The first two foals out of the mighty Zenyatta, Cozmic One (Bernardini) and Ziconic (Tapit), never reached the winner's circle during their brief careers on the racetrack, but they are both thriving in their second careers as jumpers and ambassadors for off-track Thoroughbreds. The elder brother, Cozmic One's second career has been well documented in these pages (Cozmic One: Shining New...