fair play (to you)
Well done! That's impressive! I heard you got a promotion—fair play to you! Fair play! I wouldn't have thought of doing that!
fair play to someone
INFORMALPeople say fair play to someone to mean that they should be praised for something or that what they are doing is reasonable. Fair play to The Levellers themselves for putting on musically adventurous support bands. Fair play to them if they make a few quid out of the deal.
fair play to someone
used as an expression of approval when someone has done something praiseworthy or the right thing under the circumstances.