Marmol struggles, gets out of jam as Cubs win

CHICAGO - The Cubs are treading water, Lou Piniella said Thursday. Not sinking, but not exactly swimming, either. “We've treaded water for a long, long time,” Piniella said. “We had that real good spurt where we got ourselves about 20-over-.500 or so - we've been basically treading water ever since. We're going to have to step it up.” Later, after the Cubs defeated Florida, 6-3, he was at it again. “It just hasn't been easy,” Piniella said. “It's been a complete struggle, if you want to know the truth. It has not been easy.” Piniella cited injuries as a reason for the team's recent struggles. Losing so many players, he said, made it almost impossible to continue to forge ahead. “You don't lose [Alfonso Soriano] for half a summer, you don't