038-12 Wyo. Code R. § 12-8
(a) In all Roping Events the stock shall receive a predetermined head start. Timing shall start when the steer or calf crosses the score line and shall stop when the judge determines.
(b) All Roping Events must use at least two timers who are approved by the Commission.
(c) Two hand-held digital watches shall be used in the timed events. All digits beyond tenths will be ignored. Official time shall be the average of the two times. All times in the timed events are to be recorded in 10ths of a second. If one of the two timers misses the start or stop or is delayed in starting or stopping the watch, or if the watch used by one timer malfunctions, that time shall be declared a problem to the other timer and only the time recorded by the other timer will be used.
(d) Any Roping Event using electronic timers are also required to use a minimum of two back-up hand-held digital watches.
(e) Timers will work from the same location during all go-rounds/sections at a permitted event.
(f) Timers for a Roping Event may not be changed after the first contestant starts, except for sickness or injury, which change must be approved by the Commission or Steward.
038-12 Wyo. Code R. § 12-8