Gio Gonzalez is in an unfamiliar place with ‘nothing left to prove’

MOOSIC, Pa. — “I’m going to put everything I can here, try the best I can. If it’s not good enough for 30 teams …” And it dawns on him. He catches himself, pushing away the pesky future and clutching onto the present — as frustrating as it must be. Gio Gonzalez stops and starts…