This is why I ask if there is more than one Ringaskiddy on Earth. Maybe one in the US or Canada? That would explain a lot. Look at the picture closely. This is no mere exhibition. You can see how the field is worn in a pattern familiar to anyone who knows baseball.
I find it hard to believe there was a baseball league in Ringaskiddy, Co. Cork back in the 20s. One possible explanation I could come up with was the US Navy. Did the US Navy have men stationed here during/after WWI? Other than that, I can think of no good reason to suspect that Ringaskiddy was a baseball hot-spot in the 1920s.