Four bowlers rolled perfect games at the USBC Open Championships this week, bringing this year's total to 47, which ranks fourth in 108 years of competition. D.J. Daniels (pictured) of Mason, Ohio, was the first to get the job done, and the experience of getting close to perfection before helped him finish things off this time. In 2005, Daniels started a game with nine strikes before a 10 pin ended his run. On June 17, he kept his cool and calmly delivered three strikes in the 10th frame for the 44th perfect game of the 2011 USBC Open Championships.