Hometown baseball in the [1890s] was rough and rowdy and hugely popular. A keg of beer sometimes stood just to the side of third base for encouragement. It was called a German Disturber, and any man who made it to third was entitled to a dipperful.
can't page through random books at amazon like you can at real bookstores. and in that world, you would not now have "german disturber" in your lexicon.