Certainly the best one I've read in years, maybe since I was amused and thrilled by "Casey at the Bat" as a 10 year-old.
Unfortunately, John Updike's lawyers would sue me for violating copyright if I reprinted the whole thing, but I can tease you with a few lines, and give you a link and one of Tom Hagerty's fantastic photos (which he, unlike Updike, graciously allows us to use.)
"It looks easy from a distance, easy and lazy, even,
until you stand up to the plate and see the fastball
sailing inside, an inch from your chin..."
--excerpted from Baseball by John Updike
Other favorite baseball literature?