Kentucky Derby winner Barbaro has developed "potentially serious" complications to his injured right hind leg, and underwent surgery to replace hardware and treat a new infection. Late Saturday, the 3-year-old colt, who shattered his leg at the start of the Preakness on May 20, had the titanium plate and a number of screws replaced after developing discomfort in the leg and a "consistently" high temperature. The surgery was performed by Dr. Dean Richardson at the University of Pennsylvania New Bolton Center, where Barbaro has been recovering in the intensive care unit. In a statement released Sunday, Richardson emphasized that the...