There is not a single team in baseball that is completely healthy. And the majority of our injuries have been to position players this year. Lackey and DiceK, whatever value you assign them, were hurt last year and were not part of this year's starting team. Fortunately, our starting five have remained fairly healthy. Their health is the key to any success our team has this year. We all saw what happened last year when we had to use our 7th and 8th SP options excessively.
Regardless, injuries should never be used as an excuse for failure. They are part of the game, a part the Red Sox do seem not to play well.