I've heard that it is 1 1/2 hour before the games on monday- Friday and 2 hours before the game Saturday - Sunday.
My baseball team played a doubleheader
twofold doubleheader
yes
Yes
It is usually referred to as the nightcap.
Yes, batting practice before scheduled games is open to ticket holders.
The cast of Batting Practice - 2011 includes: Logan Cross as Boyfriend
all the numbers through 564 to 652 are all inbetween 563 and 653
sports.espn.go.com/mlb/stats/doubleheaders
Larussa
1963
The cast of Inbetween Lines - 2010 includes: Stefan Scally as himself