While hundreds of thousands of baseball fans watched Wednesday’s opener of the 2012 World Series on TV or in the stands at AT&T Park, Mario Barajas had the opportunity of a lifetime. The 18-year-old San Franciscan had the honor of walking the baseball for the ceremonial first pitch to the mound. It’s an opportunity Barajas said he never thought he would have. “I’m so excited,” he said before the game. “I didn’t believe it when they first asked me to do it. I thought it was a joke. It was said so casually.” Read More