Not sure were this going, but Worcester needs starting pitchers, too. Criswell is rotation depth, coverage in the 7th to 10th starter range. He is not battling for a spot in the opening day rotation, unless there are multiple injuries.
Of course he probably will make a few starts at the MLB level. I can’t tell you how many, but I can tell you it will be too many.
And I put the odds at him finishing the season on the Sox 40 man roster at less than 25%…