Anatomy of a Goal: Iceland's long-throw routine working like a charm
A word of warning to France ahead of the host nation's Euro 2016 quarter-final against Iceland on Sunday: Don't concede any throw-ins within roughly 40 yards of your own goal.
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Iceland has become every neutral's favourite side after bucking conventional wisdom and reaching newfound, unexpected heights. The darling of the competition has caused headaches for opposing teams throughout the tournament with a simple throw-in set play that would make Rory Delap shed a tear of joy.
Just ask England, who succumbed to Aron Gunnarsson's mammoth toss during Iceland's historic 2-1 win in the Round of 16.
If that set-play looks familiar, it's because you've probably seen it before in this tournament - by those exact same Icelandic players, no less.
A nation with more volcanoes than professional footballers - as you've likely heard by now - Iceland also profited with this tactic against Austria in the group stages.
The route to the back of the net was slightly different on the two tallies, but the process was identical.
Gunnarsson, who started only 16 matches for Cardiff City last season, always looks to hit Kari Arnason (circled) with a long hoist into the penalty area. Meanwhile, two key runs off the ball coincide with the throw-in: Jon Dadi Bodvarsson (No. 1) races toward the penalty spot, while Ragnar Sigurdsson (No. 2) goes to the back post.
Here's another look at the play unfolding, from an aerial view:
In this instance, Arnason beats Christian Fuchs in the air to flick the ball backward, and it falls to the feet of Bodvarsson, who does well to hold off his marker before slotting a slow roller into the back of the net.
The same quartet was responsible for the equaliser versus England.
As Gunnarsson heaves his almighty toss into the penalty area, Arnason (circled) meets the ball in the air. Bodvarsson (No. 1) makes the run toward the penalty spot, while Sigurdsson (No. 2) makes a dash to the far post in anticipation of a potential flick-on.
Aided heavily by Kyle Walker falling asleep, Sigurdsson is able to get free, finding himself in plenty of space when the ball's flicked in his direction before simply tapping it beyond Joe Hart.
Arnason's flick against Austria fell to Bodvarsson, but in this case, the touch bypassed the angular striker - and his marker - looping over them both to fall perfectly on the right boot of Sigurdsson.
It's a slightly different route that yielded an identical result: Manic celebration for Iceland.
Obviously, avoiding throw-ins isn't a realistic plan for Les Bleus heading into Sunday's quarter-final at the Stade de France. How to deal with them when they do occur, however, could play a significant role in determining if Iceland's fairy tale will continue, or if we're going to see a heavyweight tilt between the host nation and fellow tournament favourite Germany in the semi-finals.
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France has looked worryingly vulnerable trying to defend aerial balls into the penalty area thus far, though the suspension-induced absence of the woeful Adil Rami could actually help in this regard - especially if Didier Deschamps opts for Eliaquim Mangala in his stead.
The key, however, could be the midfielders. In the two goals outlined above, Arnason made the vital first touch while being marked by Fuchs and Wayne Rooney - respective captains, coincidentally, who've never been mistaken as dominant aerial threats.
France, however, will be able to call upon Paul Pogba, the uber-athletic star who stands nearly 6-foot-3, to mark Arnason and deny him the ability to make the flick into a more dangerous area.
With the diminutive N'Golo Kante suspended, Deschamps could utilise Blaise Matuidi and Moussa Sissoko alongside the Juventus man, giving his side a considerable penalty-box presence that could, in theory, counteract what's been Iceland's primary source of offense at Euro 2016.