Click to enlarge, and debate the strip below the line.

Keith Hackett's verdict

1) Award an indirect free kick. The law does not state "back pass" – players, fans and pundits use the term, but it's not accurate. A keeper is penalised if he handles a ball that has been deliberately kicked to him by a team-mate, whether the ball goes back, forwards or up, as in this case. Only if you felt that the defender wasn't deliberately trying to get the ball to his keeper would you allow play to continue.

Thanks to Thomas Marsh for the question.

2) Keep a straight face and defuse the situation. First, assess whether the wig is a danger to opponents or to the keeper himself. Assuming it isn't, you'll have to allow him to wear it (the bald-headed Bulgarian goalkeeper Boris Mikhailov used to wear a wig during games). But make it clear that any act of unsporting behaviour during the game – deliberate provocation – will result in a yellow card. Then take the teams out on to the field of play, whether the sulking captain is with you or not. It's his choice if he wants his team to start with 10 men.

Jason Baker wins the shirt.

3) The substitution has not taken place despite the board been shown: it is only complete when the substitute enters the field of play. So all you can do is issue a warning to the manager informing everyone that you'll add time on to cover this incident. Thanks to Wayne Sullivan.

Competition: win an official club shirt of your choice

View the Kitbag range

For a chance to win a club shirt from the range at Kitbag.com send us your questions for You are the Ref to you.are.the.ref@observer.co.uk. The best scenario used in the new Observer YATR strip each Sunday wins a shirt of your choice from Kitbag. Terms & conditions apply.

For more on the fifty year history of You Are The Ref, click here.