Posted By:
Josh K.Ground rules for the Metrodome:
Foul poles are in fair territory.
Ball hitting roof or speakers in fair territory: if caught by fielder, batter is out and fielders advance at their own risk.
Ball hitting roof or speakers in fair territory shall be judged fair or foul in relation to where it hits the ground or is touched by a fielder.
Any ball that hits the speaker or roof in foul territory is a foul ball; if, however, the ball is caught by fielder, the batter is out and base runners advance at their own risk.
A ball that hits speaker in foul territory and ricochets back into fair territory is still a foul ball; if the ball is caught by fielder, the batter is out and base runners advance at their own risk.
Note specifically that in MN a ball that hits a speaker in foul territory and lands in fair territory is a foul ball as is a ball that hits the roof or a speaker in fair territory but lands in foul territory.
Ground rules for all other mlb teams can be found here:
http://mlb.mlb.com/NASApp/mlb/mlb/official_info/umpires/ground_rules.jsp