Another Friday, another trivia teaser on ManUtd.com as we look to get those brains working overtime!
This week, we were looking for United players who have double Os in their surname, with the two letters running consecutively.
By our reckoning, there are FIVE who have appeared in the Reds' first team since the seventies. They are: Ian Storey-Moore, Nicky Wood, Terry Cooke, Ruud van Nistelrooy and Wayne Rooney.
Actually, there's a sixth 'double O' player who we hadn't forgotten about (honest!) but who was technically not a permanent United player as he only played for us on loan.
That sixth player is striker Garth Crooks, who is now a TV pundit.