II. BRANDING 1) Size Relationship. The ATP Challenger Brand Mark must be a minimum of 60% of the surface area  Each Challenger tournament shall identify itself as an ATP Challenger Tour tourna - ment and shall use the ATP Challenger Tour Brand Mark as presented in “Exhibit  A.15” (the “Brand Mark”). Tournaments are prohibited from using “ATP” as part of the  tournament name. The Challenger Brand Mark is mandatory. A.Challenger Tournaments. (“Exhibit A.15”) 2.02 Identification - ATP Challenger Tour Tournaments f) Merchandise The ATP Tour Official Tournament Stamp may be used on tournament mer - chandise only in conjunction with the official Tournament logo, provided that  such a use complies with the terms and conditions set forth in the ATP Rule - book. Specific application requirements will be provided to tournaments sep arately. Any and all applications must be approved by ATP’s retail merchan - dise consultant, at a minimum three (3) months in advance. No approval is  required if merchandise is obtained from an approved ATP licensee. e) On-court Ball Persons / Linesmen  If a tournament wishes to use the appropriate ATP Tour Official Tournament  Stamp on the uniforms of ball persons or linesmen, the application of the ATP  Tour Official Tournament Stamp must be approved in advance by ATP. ii) Combined Events.  If the WTA logo is placed on the back wall of the court then the ATP Tour  Official Tournament Stamp must also be placed on the back wall in equal  size and with equal television visibility. i)  ATP Tour Men Only Events. The ATP Tour Official Tournament Stamp may be used in the left and right  corners of the backdrop, facing the main camera. If a tournament decides  to do so, the ATP Tour Official Tournament Stamp must be placed in a  non-obstructed position, away from ball persons, scoreboards or corner  camera positions. The ATP Tour Official Tournament Stamp must be 40%  of the height of the board, and placed in the top 60% of the board. d) Court Backdrops – ATP Tour Official Tournament Stamps (“Exhibit  A.14”)  ii) Rotating / LED Banners. i) Lettering. c) Court Backdrops – Color (“Exhibit A.14)  players. The preferred backdrop color for all ATP Tour tournaments is the closest  match to PMS 281. PMS Cool Grey 5 is the preferred color used for lettering. If the tourna - ment selects color combinations other than those outlined in the previous  sentence, then such color combinations may not include shades of white,  yellow or other light colors and must be approved in advance by ATP. Background and lettering on Rotating / LED Banners should be consis - tent with the color of the back walls. Rotating / LED Banners can only  change between games.  II. BRANDING ample: Germany, Munich or Bavaria) on the court surface, subject to the  placement and size restrictions set forth below. The preferred font is Din  Condensed, however, tournaments may use the official logo or font of the  host country, city or region; all versions other than the preferred font must  receive the prior approval of ATP. The on-court logo must be consistent with  the texture and feel of the court surface so as not to affect play or be a safety  hazard, as further described below. 29 28 i)  Host Locality Option 1 a) Clay Courts: b) Hard Courts: ii) Host Locality Option 2 (Not for use on clay) Host country/city/region must be written in upper case, if using the  preferred font, in white on both sides of the court, centered between  the singles sidelines. Host country/city/region must be displayed on one line, facing the  main camera. Maximum text height is 50cms (20”). The closest distance permitted from the baseline is 300cms (9’ 10”).  The material used for the name, on a hard court, must be of the same  material and texture as the court surface to ensure safe footing for the  Host country/city/region must be written in upper case if using the  preferred font and all versions must be in white on one or both sides  of the court at the service line. Host country/city/region can be displayed on one or two lines, facing  the main camera. Maximum text height is 40cms (16”). Text should be placed 40cms (16”) from the doubles line. When text is displayed on two lines, they should together be centered  on the service line. Line spacing should be 20cms (8”). Host country/city text should be elongated by 27% for improved tele - vision visibility. The material used for the name, on a hard court, must be of the same  material and texture as the court surface to ensure safe footing for the  players. Host country/city/region must be written in upper case if using the pre - ferred font and all versions must be in white on one or both sides of  the court and is to be centered between the net post and the service  line. Host country/city/region can be displayed on one or two lines, facing  the main camera. Maximum text height is 40cms (16”). Text should be placed 40cms (16”) from the doubles line. When text is displayed on two lines, they should together be centered  between the net post and the service line. Line spacing should be 20cms (8”). Host country/city text should be elongated by 27% for improved tele - vision visibility. On a clay surface, the text must not protrude above the surface of the  court.