ckummer, it is entirely possible that you could find a pickup game pretty much anywhere. I saw one on Sosua beach with a bunch of kids, and another in a field while walking through town, another couple of kids were playing catch. One of them couldn't have been 10 years old, his buddy threw a fly ball to him and he caught it on a bounce and made a great throw! Real strong. Don't bother bringing a glove; none of these kids used them. They might let a tourist join them just to get a laugh.
A couple of nights ago, at the school diamond over by the Casa Marina, I saw a men's fast-pitch softball game. It looked like a "work" league. They all knew each other and were talking a lot of smack! One guy hit one that dropped into rf and by the time I took my eye off the ball, the guy was almost to second...he was really freaking fast!
The next guy cranked one high down the lf line...it looked like it was going to curve out but it was straight as an arrow, all the way back to the fence. I mean that mf was gone, but the lf was there for the play. He made a great catch and an awesome cutoff to the ss who made a very fast throw to the plate but it was high. Speedy was already home and the play was so close I could hardly tell. He looked safe, but I couldn't tell what the ump did because I don't know spanish, and it happened too fast! Very dramatic.
Anyway, these guys were obviously great players, they looked like guys you might play with in a work league in the US that played baseball in college. It was a hoot until the rain forced me away.
So yes, there's good baseball in the DR, and it doesn't matter what league is playing!