Shohei Ohtani says he believes recent left knee swelling is linked to his pitching mechanics. According to reporting from New York Post and Yahoo Sports, Ohtani has a specific theory about what may have caused the inflammation. The outlets report that the issue centers on how he delivers pitches and how that motion could have affected his knee. The coverage characterizes Ohtani’s comments as his own assessment rather than a finalized medical diagnosis, and it does not attribute the swelling to a different underlying injury in the information provided. Both sources describe the knee inflammation as a recent development and present Ohtani’s mechanical explanation as an attempt to identify the cause. The reports do not provide detailed medical findings, timelines for recovery, or confirmation from team physicians in the excerpts summarized. Overall, the accounts agree that Ohtani connects the swelling to potential flaws or inconsistencies in his pitching mechanics.