The ulnar side is composed of the hook of the hamate and pisiform bones. The radial side is made up of the scaphoid and trapezoid bones. The floor of the tunnel relates to the first proximal row ...

Blue Jays catcher Danny Jansen has been diagnosed with a fracture of the pisiform bone in his right wrist, manager John Schneider revealed to reporters today (X links via Keegan Matheson of MLB.com).