Reading the ESPN article, it sounds like he went to 4 different doctors and all 4 called it a bone bruise. He found a fifth doctor who called it a fracture.
I've been through similar injuries with my son a couple times. There will be some kind of dark spot on the x-ray, and the dr will get the opinions of a few different x ray techs. Some will see some kind of fracture like a stress fracture, others will say bone bruise. No real way to know conclusively and treatment is about the same. I just read this too:
The American Academy of Orthopaedic Surgeons has summed up these injuries as pretty much one and the same by stating that “a stress fracture is a small crack in a bone, or severe bruising within a bone.” Note the “severe bruising” in the description. The Academy goes on to say that in the case of running, these injuries are usually caused by an increase in activity, such as increasing distances too quickly.
Sounds like Rendon wants everyone to visualize his bone is broken in two and the team wants to keep trotting him out there. He's kind of being a whiny brat about lots of things these days. Although it sure sounds like his relationship to the team is broken. The team itself is a mess with Ohtani's locker being suddenly cleared out, talking about trading Trout and this Rendon stuff.
They have a similiar situation as us with an owner who tried to sell, but couldn't, and a 250+/year tv contract that is in limbo with a bankruptcy company.