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

Keith Hackett's verdict

1) Is the team-mate being unusually honest, or is he just trying to save the megastar from dismissal? Either way, it's irrelevant – you have to stick with your belief, and not base your decisions on what players tell you. Send off the star for a second yellow card offence – and, if you think the team-mate was deliberately lying to you, show him a yellow card too. Thanks to Jason Chau.
2) No goal. You should really have blown the whistle before the ball rolled into the goal. As it is, restart with a dropped ball on the goal area line parallel to the goalline, nearest to where the ball entered the net. It's worth noting that, if the mud had been flicked or thrown deliberately, you would have to show a red card, and restart with a direct free-kick to the defending team. Harry J Pollitt wins the shirt.
3) Show the injured substitute a yellow card for entering the field of play without permission. The substitution had not been completed because the original player had not left the pitch – so allow the manager to cancel the change, and use another sub instead. Thanks to Dylan Acosta-Lewis.

Competition: win a T-shirt of your choice

For a chance to win a Philosophy Football T-shirt of your choice from the Guardian range send us your questions for You are the Ref to you.are.the.ref@observer.co.uk. The best scenario used in each new strip wins a T-shirt; Terms & conditions apply. For more on You are the Ref's history, click here.