Boxing’s No. 1 pound-for-pound king and the reigning Fighter of the Year, Manny “PacMan” Pacquiao, will be bringing the heat when he throws out the Ceremonial First Pitch at Petco Park in San Diego, Calif. before the San Diego Padres – Arizona Diamondbacks baseball game, today. This event will conclude the cross-country, five-city, two-ocean media…