Jesse Johnson/US PresswireCasey BlakeThe setup: After an .832 OPS in his first full season as a Dodger in 2009, Blake played in 146 games in 2010 but fell to a .727 OPS. The Dodgers believed going into 2011 that Blake would need more regular rest to remain productive.The closeup: Forget about rest: Blake hit the disabled list before Opening Day, setting the tone for an injury-riddled season. When he did play in April, he was actually red hot, with a .446 on-base percentage and .509 slugging percentage in 14 games, only to return to the DL before the month was over. When he was activated in late May, he started out 5 for 16, but then suffered through a rough June: .250 on-base percentage, .262 slugging. His third trip to injured reserve soon followed, taking him out for most of July. He was