Click to enlarge, and debate the strip below the line.
Keith Hackett's verdict
1) You have to intervene here, you can't allow this to happen. The guidance is clear on this: equipment of this type – cameras, TV monitors etc – cannot be used in the technical area. Authorities can now impose retrospective punishments based on video evidence, as happened to Diego Costa recently, but that does not mean teams can start filming each other from the dugout just in case. After the match, report what happened to the FA. Thanks to Christian Jackson.
2) In my long career I was hit by the ball only once. Sadly, in my case, the ball deflected off me into the path of the No9, who blasted it into the net – and I had to award the goal. In this scenario, too, the goal stands. Thank your assistant for taking responsibility and not immediately stopping the game, and confirm with him that the goal was valid. After that, though, you really need to relinquish your duties – it's not safe to continue after being knocked out. Arrange for a colleague to step in. Professor Robert W. Zoellner wins the shirt.
3) You have no idea what the substance is, and you have no way of finding out. This player may be diabetic, so the injection may be perfectly legitimate. All you can do is have a word, make sure the syringe is safely disposed of, then allow him to enter the game as normal. Mention it in your post-match report. Thanks to Sheikh Sal.

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