period_of_play
1. [ noun ] (in games or plays or other performances) the time during which play proceeds
Synonyms: play playing_period
Examples:

"rain stopped play in the 4th inning"

Related terms: measure inning hole turn final_period over first_period chukker third_period second_period half period quarter set chukka athletic_game game play
Similar spelling:   period_of_time
  period_piece