Daniil Medvedev handed Novak Djokovic his first defeat of the season in the semi-finals of the Dubai Duty Free Tennis Championships.
Djokovic went into the clash on a 20-match winning streak taking in the ATP Finals at the end of last season then titles in Adelaide and at the Australian Open in January.
But this time it was another man in form, third seed Medvedev, who proved too strong, pulling off a 6-4, 6-4 victory as he chases a third successive title.
Djokovic lost four games in a row from 2-1 up in the opening set, making too many errors as he tried to finish rallies early.
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