STANDARDS SECTION XVIII - TOURNAMENT STANDARDS OF PERFORMANCE request, unless otherwise advised of a medical emergency. If there are two (2) court calls on the same court the following  procedure will occur: In the event the PHCP determines both court calls to be muscle  cramping, the PHCP will treat the player who had the first request for  sixty (60) seconds (as timed by the Chair Umpire) and then treat the  second player for the remaining sixty (60) seconds of the 120 second  change of ends, or treat each player for ninety (90) seconds during a  set break. (a) The PHCP will go to the first request or medical emergency,  administer a complete evaluation and MTO, if indicated, then; (b)  Go to the second request and administer a complete evaluation  and MTO, if indicated; and (c) The PHCP will rotate treatments on the change of ends, if  necessary, beginning with the player who had the first request,  until the process is complete. v.  Warm-Up Period With regard to the Medical Rule, the match includes both the warm-up  and play; thus, any medical condition incurred during the warm-up is  considered a medical condition during the match. If a player sustains an acute treatable medical condition during  the warm-up that prevents the player from starting the match as  scheduled, the player can receive either a MTO or ninety- (90) second  treatment period at the end of the warm-up, prior to the start of the  match. If the MTO is taken during the warm-up, the five- (5) minute warm-up  shall be suspended until the conclusion of the MTO. If it is clear the  player is not physically able to compete after receiving treatment,  then the match should not begin. Extreme Weather Conditions shall be defined as when the Heat Stress  6.  Extreme Weather Conditions and Lightning a. Definitions i.  Measurement Methods 363