This boxer trained by Naazim Richardson won a gold medal in what event in 2007?
Naazim Richardson:  Richardson is most notable for training Bernard Hopkins and "Sugar" Shane Mosley, in addition to Steve Cunningham and Karl Dargan; furthermore, he is known for catching Antonio Margarito with plaster knuckle pads in his hand-wraps, prior to Margarito's fight with Mosley, leading to Margarito's eventual 1 year suspension from the sport of boxing. Karl Dargan: Karl Dargan (born June 17, 1985 in Philadelphia) is an American boxer best known for winning the gold medal at the 2007 Pan Am Games in the Men's Light Welterweight.
Pan Am Games