TEMPORARY FAILURE OF LIGHTS
The Note to Official Baseball Rule 5.12(b) states that a league may adopt its own regulations governing games interrupted by light failure. The following are the regulations to be adopted:
In the event of a temporary failure of lights while a ball is in flight or a play is in progress and the umpires are not able to follow the play because of the light failure, the umpires will immediately call “Time.” If a play is in progress when such light failure occurs and further action is possible, the entire play shall be nullified. When the lights are restored, play shall resume with the same situation as existed at the start of the play that was interrupted by the light failure.
NOTE: If runners are being awarded bases at the time of light failure, after the lights have been restored runners are allowed to run bases in accordance with base-running rules.
Play: Batter hits ball out of ballpark for a home run. After the ball has left the park and runners are rounding the bases, light failure occurs.
Ruling: When the lights are restored, runners are allowed to run bases in accordance with base-running rules.