Does he have the stuff to pitch in the majors? Sure looks like it. Does he have the mental makeup to pitch in the majors? Sure sounds like it. Is bringing him to the majors now the best thing for his career? Ah, now THAT is the important question. It sure is tempting to put him on the major league roster but here are some reasons not to do it now. 1. He's pitched more innings this year than in any previous season, and more and more baseball people feel that too much throwing early in one's career is linked to the marked increase in TJ surgeries needed in this day and age. 2. He's always started, and the Twins have already had to put one starter in their bullpen. Asking Berrios to become a different pitcher may not be wise given his age and number of innings already pitched this year. Even though it would mean fewer innings something like that could throw a young pitcher out of whack. 3. He's not on the 40-man. This is not the best juncture to remove someone from the 40-man to make room for him. There are several players I'd DFA when the season is over but not now. I'm not saying he should be called up and I'm not saying he should not. But I think caution with this important player is prudent at this stage of his career.