Now Batting in Class AA: Biggio, Bichette and Guerrero

From left, Bo Bichette, Cavan Biggio and Vladimir Guerrero Jr. The three, all sons of former major league stars, play together in the infield for the Class AA New Hampshire Fisher Cats.HARTFORD — Craig Breslow is 37 years old, with a dozen years of experience as a left-handed reliever in the major leagues. He is pitching now for the Class AA New Hampshire Fisher Cats, just getting to know his teammates. In their opening series here, at Dunkin’ Donuts Park against the Hartford Yard Goats, third baseman Vladimir Guerrero Jr. amazed him.

“Last night Vlad made a throw across the diamond, and I was like, ‘I didn’t realize he had that arm!’” Breslow said. “And then I thought: ‘I kind of should…