Oldest Ballpark?

Which one is it?

There are numerous arguments about which ballpark is the oldest still in use. There are a few things we do know. Built in 1912, it is not Fenway Park. Although that is the oldest park in the Majors. 1910 was the year that Rickwood Field in Birmingham, AL opened. They claim that they are the oldest park, but they are wrong. Among researchers, it is pretty much determined that it is one of the three parks I have listed on the page. If you know which one is the oldest, please, let me know and show me the proof, I would love to update this site.

2006-17 Paul Healey.