Even if Rocco had been mentioned, it's always one of two lame excuses--either it's not his fault because managers have no real impact on the game or it was just bad luck, too many injuries, etc. If he has no real impact on the game, why even have a manager at all?
His ability to do what? Strikeout? He's hitting .163 and striking out about 50% of the time. If the guy could actually hit around .225 or so, things would be much different. Right now, he's nearly an automatic out with an occasional homerun.