By PAUL GOTHAM ROCHESTER, NY -- Grant Heyman is back to work. That's the way the Arizona Diamondbacks farm hand prefers it. A winter with a touch of discontent behind him, Heyman is doing what he does best: competing. "I’ve never really had an off-season before," Heyman said recently. "This was the longest period of time I’ve gone without competing in a game, and it's almost … [Read more...] about Grant Heyman and the fire burning inside