Early this afternoon, national baseball writer Robert Murray, who currently writes for FanSided, tweeted this interesting information:
The MLBPA has organized a “fully staffed” stadium and facility for players to train in Mesa, AZ, according to sources familiar with the situation.
— Robert Murray (@ByRobertMurray) February 28, 2022
Well. Obviously it couldn’t be Sloan Park or HoHoKam Stadium as those are both MLB facilities which are currently in use for training of minor league players. Plus, with a lockout in place there’s no way MLB teams would allow the MLBPA to use it.