FWIW, bbref had Rosario listed as a plus defender (runs above average) in 2015-17. Not so much this year or last. One thing I've repeatedly seen out of Eddie is jogging after balls that get past him down the left field line. I've thought he was baiting guys to try for third on "automatic" doubles, believing he would throw them out of they tried to stretch for a triple. If throwing is included in these metrics, I have seen far fewer "huh?" throws from Eddie, but far fewer runners trying to take an extra base. He's gotten leather on, but not caught, several balls these last two seasons and my eyes tell me that his jumps on balls are worse, or at least not improved. As far as trading Rosario, I don't know. He's been a borderline All-Star two straight years and loves the big moment. He has periods of invisibility . If someone from the Twins' system reduces his playing time, I do believe he could be moved without much loss on the field.