Don't know about baseball, but in other sports there are people who are paid to watch and hit buttons to help betting syndicates. "Courtsiders" (it started in tennis, so by the side of the tennis courts), are almost a bit behind the SOTA now, but there are accounts of that lifestyle[0]. Reading them, there is a mixture of partying and watching sport, with a local police chief in a Middle Eastern state putting his gun on the desk between you and suggesting bad things might happen if you don't leave town immediately. Fun? Up to you.

[0] https://www.amazon.com/Game-Set-Cash-International-Trading/d...