Maybe, but since Donaldson's return, Your Js are scoring runs at 'bout the same pace they were during the 40 games he missed.

And, let's mention that Donaldson was playing during his team's god-awful start to the season, which is still the main reason why they're where they are in the standings.  And though he may not have been 100% during those games, his stats were very good, OPS over 1.000, eg.