PLAYERS SECTION VII - PLAYER RESPONSIBILITIES/ON-COURT RULES AND PROCEDURES ii.  Player ID d.  Clothing Sponsor e.  Size Determination For a tennis clothing collection that includes a player’s name,  initials, or other identifier that is solely used for tennis clothing and  accessories (“Player ID”), such Player ID may be used interchangeably  with the clothing manufacturer identification wherever manufacturer  identifications are permitted under this rule. For the purposes of Section VII.C.3.g, the “clothing sponsor” means  a company designated as the sponsor of a player’s clothing (not a  manufacturer). The size limitations of identifications in this section VII.C are ascertained  by determining the area of the actual patch or other addition to a player’s  clothing without regard to the color of the same. In determining the area,  depending on the shape of the patch or other addition, a circle, triangle,  or rectangle shall be drawn around the same, and the size of the patch  for the purpose of this rule shall be the area within the circumference of  the circle or the perimeter of the triangle or rectangle as the case may be.  A player must present herself in a professional manner and wear appropriate  tennis attire, at the discretion of the Supervisor or Referee, during practice,  warm-up, and matches. A player may be asked to change if the Supervisor  or Referee deems it necessary. Failure to do so may result in default from a  Tournament and/or a fine. From the start of the pre-match meeting through the Tournament Ceremony,  a player’s clothing and equipment must comply with the appearance and  identification provisions contained in this Section C. No identification is permitted on players, their clothing, or equipment on  court from the start of the pre-match meeting through the Tournament  ceremony except as follows: 2.  General Appearance 3.  Clothing and Identification a.  Shirts, Sweaters, Jackets i.  Commercial Identification Two (2) commercial identifications, each not exceeding four (4)  128