In our latest JG challenge, Mikel Arteta and Emiliano Viviano put their heading skills to the test at London Colney.
Check out our video above by clicking the PLAY button.
Next time around it's the turn of Laurent Koscielny, Ryo and Nacho Monreal to give the challenge a go.
Who do you think will win? You can vote below.
If you can think of a good challenge to submit to the players, then you should enter our JG challenge competition. Click here to find out more.
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