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The Southampton midfielder was left with his legs in a twist when he tried to tackle Ronaldo at Windsor Park as the 28-year-old pulled off a Cruyff turn and an improvised nutmeg before back-heeling the ball away to his team-mate.
Meanwhile, Davis was left swinging at thin air and made to look like a Sunday League amateur.
VIDEO Amazing trickery from Cristiano Ronaldo
Shwoman: Cristiano Ronaldo back-heels the ball through the legs of Steven Davis on Friday night