British number two Cameron Norrie was beaten by American Ryan Harrison in the semi-finals of the Atlanta Open.
Norrie, 22, had looked to be heading for his first ATP final after taking the first set before the eighth seed fought back to win 2-6 6-3 6-2.
Harrison will face Wimbledon semi-finalist and compatriot John Isner in Sunday’s final.
Norrie, the world number 73, was in his second ATP semi-final after reaching the same stage at May’s Lyon Open.
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