Although Colorado players, managers, and coaches said they would not issue a formal complaint about the playing conditions in Boston, the Rockies have gone on record as saying the 'thick, soupy sea-level air' in the city made it unusually difficult for them to play baseball. 'Seriously, I can barely push my bat through this stuff,' said Rockies slugger Matt Holliday, who collapsed and had to be administered less oxygen after Wednesday's practice. 'I was hitting them as hard as I could out there and the ball was still returning to the earth. We might as well be playing in quicksand.' Other Rockies players were equally vocal in their criticism of the hostile atmosphere in Boston, with Kaz Matsui claiming he found it hard to slide through the viscous air and Willie Taveras aggravating a recent thigh injury while attempting to stand up quickly. 