Here is one of the smallest ballparks in College Baseball. Iona plays their home games at City Park in New Rochelle, NY. It looks like it actually seats about 50 people in it's two 3 row bleachers. I think their highest attendance last year was a game against Marist (237). I am assuming their was a lot of standing or lawn chairs brought from home.
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College - Iona
Stadium - City Park
Lat - 40.93044
Long - -73.770725
Capacity - 250
LL - 350
LF - 355
LC - 380
CF - 390
RC - 380
RF - 355
RL - 340
LL - 6
LF - 6
LC - 6
CF - 6
RC - 6
RF - 6
RL - 6
LHB - 0.960
RHB - 0.912
2B - 1.122
3B - 1.091
HR LHB - 0.933
HR RHB - 0.934