Even on a wet running surface, Ty McCormack didn’t slip. McCormack, a 2010 North Hall graduate, was the first Georgian to cross the finish line for a third consecutive year at the Peachtree Road Race on Thursday in Atlanta. The 20-year-old finished 32nd overall out of about 60,000 participants with a personal record time of 30:08 on the 6.2-mile course, shaving 23 seconds off his 2012 performance.