Over 1,000 persons visited the Union Grounds yesterday and watched the players of the Union team practice...There will be four entrances to the Union Grounds open to-morrow [for the Maroons' first game]. One of these will be on Cass avenue, one on Twenty-fourth street and two on Jefferson avenue...All day yesterday a horse was kept at work pulling a heavy front roller over the Union grounds. So as to prevent the horse from cutting up the ground, his feet were wrapped in pieces of old carpet.
-St. Louis Globe-Democrat, April 5, 1884
I had kind of skimmed this article last week and wondered about the effect a horse would have on the field. Reading more thoroughly, I now know how to keep a horse from ripping up a baseball field. You learn something new everyday.