1. Chris Dial says that the score in that game on 6/14/1987 was 7-3. He's right. I forgot to fact-check that. Someone else commented on my blog that the game was inspired by this game. Said it was documented in Jeff Pearlman's book "The Bad Guys Won." I did read that book once when I had the notion to write about the 1986 Red Sox season, but I didn't recall that.
2. Devin McC is of the opinion that Seinfeld isn't part of the Tommy Westphall Universe. I agree. Parts of that universe like Murphy Brown were portrayed as TV shows in the Seinfeldverse. That said, the MLB on that show is slightly different. I haven't gone through the show with a fine-tooth comb, but there was no catcher ever by the name of Genderson. The closest real life one I could find was Rich Gedman. Last I checked, he was managing the Worcester Tornados in the Can-m League and not murdering dry-cleaners.
EDITED TO ADD:
3. 2nd Spitter to 2nd Shooter: Len Lesser (Uncle Leo) was in Kelly's Heroes with Donald Sutherland who was in JFK (Along with Kevin Bacon, natch.)