Its been at least six years now - maybe more - since Fox took over on Saturdays. Once their seasonal Game of the Week package starts, there just are no MLB games on the package. You still can get the local team in your area if they are playing, for example the Cards were on KPLR today.
The package then doesn't begin until 7 eastern, 4 pacific. There is absolutely no way around this except when the "hu cards" worked around the blackouts and you could still watch the regionals.
Sometimes, a backhaul will pop up on Cband. maybe one over three weeks or so.