15(a)
The Referee, in his/her discretion, shall have the power to warn, penalize or default a player for unsportsmanlike conduct or dangerous play. Instances of unsportsmanlike conduct include, but are not limited to, the following: swearing; racquet abuse; physical or verbal abuse of an opponent, Referee, Scorer or Judge; intentionally striking (or attempting to strike) an opponent with a ball or racquet. Instances of dangerous play include, but are not limited to, the following: unnecessarily striking a ball without being aware of your opponents’ positions on the court when a Let would otherwise have been granted to the striker had he/she refrained from such striking; playing a ball so near or in such proximity to an opponent so as to create a reasonable likelihood of causing injury to said opponent; or the like.