CHICAGO -- The Chicago White Sox filled another hole in their bullpen Wednesday by claiming right-hander Javy Guerra off waivers from the Los Angeles Dodgers.The reliever, who has some experience as a closer, spent most of last season at Triple-A Albuquerque, where he posted a 3.66 ERA over 27 games, while recording 12 saves. He had shoulder surgery in November of 2011 and dealt with a groin strain during spring training last year. During a brief nine-game stint with the Dodgers last season he had a 6.