It's all crap. https://theathletic.com/1587470/2020/02/06/rosenthal-three-team-mookie-betts-trade-held-up-may-be-adjusted-over-medical-review/ From the article: "The Red Sox, after viewing the medical records of Twins right-hander Brusdar Graterol, projected him more as a reliever than as a starter, according to sources involved with the discussions." How does a pitcher's medical record show that he's more likely to be future reliever rather than a starter? Wouldn't that come from a scouting report? Do the Red Sox no longer have scouts? There is nothing out there that is a secret about Graterol. Graterol had Tommy John surgery in the past, and he missed two months of this last season with a shoulder impingement but was back on the mound in September throwing 101 MPH. Now how would his medical record indicate he's a reliever, not a starter? If his arm is about to fall off, wouldn't that mean that he cannot pitch at all? Note the Red Sox are not saying they don't want Gratesol because of his past injuries (widely known) or because he's too fat (which a second grader can figure out by looking at the height/weight measurement). The big key in this is that they aren't saying they don't want Graterol, which really should be the case if they have a significant concern with his medicals. What they are saying is they want more, with some flimsy excuse about the medicals saying he's a starter and not a reliever, which really doesn't make any sense at all. Injuries to pitchers that move them from a starter to a reliever happen all the time. It is not a flimsy excuse at all as it is rather valid for them to bring up. For example if the injury to his shoulder hasn't fully healed or how it healed is going to be the best that it is going to be he could have more fatigue in his shoulder thus reducing how many innings he can pitch in the year. That would move him from a starter to a reliever. Dismissing the medical records as a way to judge a player on if they are better as a reliever versus a starter is rather short sighted.