World No.1 Novak Djokovic was knocked out on Friday by Dusan Lajovic (N.70) in the quarter-finals of the ATP 250 tournament in Banja Luka 6-4, 7-6 (8/6), raising further concerns a few weeks away of Roland Garros.
Djokovic, who had lost just four matches to his fellow Serbian, was punished for failing to convert three points in the second set tie-break.
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