Let’s look at some stats:
At the AA level this season, through 77 games Devers is hitting .300 with 18 HR. He’s also tacked on 86 hits with 56 RBI.
Are these stats good enough to be called up to the majors? In most situations, absolutely from a statistical standpoint. However, in this case the time is not right to call him up as the Sox are seeking a playoff run and approaching a win now mentality.
Devers is seen more as future talent, and if anything with the Sox current situation changes then expect to see Devers in the big leagues. For now though, he will have to continue to prove himself in AAA.