Yes, MLB contracts in particular ban a lot of off-field activities, I have learned. And some contracts are customized to the player’s known hobbies, etc. These clauses became unavoidable when MLB contracts began to go long-term and guaranteed.
I don't know if he was motivated to do this by a provision in his contract or just a general concern for his own health and safety, but one of the reports this morning said he had recently given up bike riding for safety reasons.
That makes sense. The teams have a lot on the line there.
I appreciate the comments.