PLAYERS SECTION VII - PLAYER RESPONSIBILITIES/ON-COURT RULES AND PROCEDURES 4.  Equipment and Identification a. Racquet b.  Bags, Towels, or Other Equipment or Paraphernalia c.  Drink Containers Standard identifications of the manufacturer of the racquet and/or  strings are allowed on the racquet and the strings. Standard identifications of the tennis equipment manufacturers, or the  WTA Logo, are allowed on each item. In addition, two (2) commercial  identifications on one (1) bag, neither of which exceeds four (4) square  inches (26 sq. cm), are allowed. Players may use a reasonably sized drink container on court if the drink  container:  i.  has no identifications; or ii.  has one (1) manufacturer identification not exceeding four (4) square  inches (26 sq. cm.), provided that the container manufacturer:  (a) is not a drink manufacturer; or (b) is also a drink manufacturer, and  (i)  is the official drink sponsor of the Tournament; or  (ii) is not in the same beverage category as the advertised  drink sponsor(s) of the Tournament. d.  Electronic Devices A player is not allowed to use any electronic device on court unless it  is approved by the WTA Supervisor/Referee. Use of any WTA-approved  electronic device and/or ITF-approved Player Analysis Technology is  subject to the coaching provisions and penalties in the Code of Conduct  (see Section XVII.D.4.a.vii) and the WTA On-Court Coaching Rules (see Section XVIII.D) and the ITF Rules of Tennis regarding Coaching (Rule 30)  and Player Analysis Technology (Rule 31, Appendix III). If there is a conflict  between the WTA Rules and the ITF Rules of Tennis regarding electronic  devices and related on-court coaching, the WTA Rules and the decisions  of the WTA Supervisor/Referee will control. 133