Each team shall provide at least one legal ball to the referee at the time the game officials assume authority for the contest. Only legal balls approved by the referee may be used during the contest.
Tag: referee
Rule 4, Section 5, Article 3
A single charged time-out shall not exceed one minute. The referee shall notify the teams within five seconds after the time-out expires and shall mark the ball ready for play. Charged time-outs shall be reduced in length only if both teams are ready to play prior to the ready-for-play by the referee.
The Zebra Files 