There is a possibility of some women playing. You can also wish your mothers a Happy Mother's Day from me if you want.
Besides these days the push is to have terms such as mother as nongender specific. If you believe CNN and most mainstream news then men can be mothers, women can be dads, you don't have to have human children or pets to be a parent, and you can be a mother/father for no other reason than that is the way you FEEL that way that day.
Not my personal beliefs but feel free to celebrate yourself on Mother's day if you feel like it. You too can qualify as a mother if you want to feel that way today. Be sure to ask for the Mother's Day discount for mothers if you go out to eat. Threaten to sue for discrimination if they don't give it to you. Happy Mother's Day!
I think even mother f#/!&rs can qualify if they want!