Edited Release, courtesy Gulfstream Park Calling it "the biggest challenge of my life," popular Hall of Fame jockey Javier Castellano has overcome being diagnosed with the coronavirus. Castellano, 42, spent 14 days in quarantine at the South Florida home of his 64-year-old mother, where Gulfstream's five-time Championship Meet leading rider had been since testing positive upon his arrival from New York to ride over GI Curlin Florida Derby weekend in late March. As part of strict protocols put into place by Gulfstream management, all riders who came in from out...