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After Rose and Kaymer had got themselves into the lead after three holes, the American duo hit back when Kaymer missed a par putt on the fourth green.
The fifth was shared but a bogey at six from Rose and Kaymer allowed the young twosome to move in front and they extended that when Spieth made birdie at seven.
Reed missed a putt for the three-shot lead on the eighth, but a stellar approach from Spieth on the ninth gave him the chance of a birdie.
However, after Rose had guaranteed a half for Europe, Reed missed the left-hand side of the cup to allow the hosts to pull a shot back at the turn.
You can keep track of the back nine by following Sports Mole's live text commentary.