The Giants have signed 25-year old righty starter/reliever Mason Tobin to a minor league deal. He didn’t pitch anywhere last year due to injury. His only major league experience came back in 2011 with the Texas Rangers. He pitched in 4 games (0 starts) for the Rangers in 2011 and he was 0-0 with a 6.75 ERA and a 1.88 WHIP. Tobin has pitched in 25 games (21 starts) in his first three years in the minors and he is 6-4 with 1 save, a 2.43 ERA and a 1.09 WHIP. Tobin was a hot prospect not so long ago, so the Giants might catch lightning in a bottle here.