Nike have a priceless asset in McIlroy. He's young, extremely talented and will be a role model to millions of sports fans around the world.
The deal puts the kerfuffle over whether McIlroy should play golf as Irish or British firmly in context.
For the next five years -- in golfing terms at least -- McIlroy is Nike first and foremost, a citizen of Nikeland, alongside Tiger Woods, Roger Federer, Wayne Rooney and others.
He may be from Co Down but McIlroy is a sportsman of the world -- the possessor of a unique talent that surpasses all borders.