At first, it just felt like a forearm cramp. Sam Rosand shook it off. The high school junior figured serious pitching injuries involve a pop of the elbow, so he toed the rubber and threw again.

Since the Washington Nationals contemplated shutting down their best young starter before a postseason run more than a decade ago, prevailing wisdom around Major League Baseball has centered on the ...

Please provide your email address to receive an email when new articles are posted on . UCL thickness may be greater in pitchers vs. position players and throwing arms vs. nonthrowing arms. UCL ...