SARATOGA SPRINGS, N.Y. - Calibrachoa, one of the top sprinters in the country since the winter of 2011, has been retired, trainer Todd Pletcher confirmed on Monday. Calbrachoa became a five-time Grade  3 winner after being claimed by owner Mike Repole for $40,000 during the fall of 2010. A son of Southern Image, he also finished third here last summer in the Grade 1 Vanderbilt and third in the Grade 1 Cigar Mile in his 2011 finale. He had not started since successfully defending his title in the Grade 3 Tom Fool at Aqueduct in March. “He’s been a really good horse to us, a top class sprinter. He just had a couple of physical issues we could not overcome, so we just decided to call it a day,” said Pletcher. [Complete coverage of racing at Saratoga: News, PPs, and video]