I am looking for the name and author of a short story that I read when
I was in college.  I believe the story was part of an anthology that
would have been used in a literature class in the mid-nineties. 
However, it could have been a story that was placed in a self-copied
packet made by the professor and sold through the local copy shop.

I can only remember a few identifying details about the story.

* The story centered around a teenaged boy or maybe he was in his early twenties.
* I believe it began with him lying around in his room listening to a
baseball game on the radio.
* He takes a long walk (during the night, I believe) to sort out an
important question (or something like that).  I also think that it was
very hot during the night he took his walk.
* I believe it may have taken place in New York City.

I really liked this story, and I want to read it again.

Can anyone help me figure out the title and author of this story?