ATLANTA — Charlie Blackmon saw the video, the footage of him nearly swinging out of his shoes, then tumbling into the dirt and grabbing his leg. But he won’t apologize for it. “It looked bad,” he said. “But I’m trying to swing hard. That’s what I do. I swing the bat hard.” The Rockies’ all-star center fielder left Friday night’s game mid-at bat in the eighth inning with a left hamstring cramp.