This article despite being a parody actually is quite accurate. By the 5th inning most of the ballpark fun has already been had. Plus you are home before Piano Man. Read it.
EAST LANSING, MI—According to a report published Wednesday by researchers at Michigan State University, staying past the fifth inning of 83 percent of baseball games is usually pretty pointless.
It would be equivalent of not going to an NBA game until the last 5 minutes.