Novak Djokovic edged to a straight-sets win over German lucky loser Mats Moraing on Tuesday in his opener in Belgrade where the world number one is warming up for Roland Garros.
The clay-court Grand Slam starts in Paris on Sunday, and Djokovic opted for extra match practice on home soil this week.
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The 34-year-old was made to fight by the world number 253, winning 6-2, 7-6 (7/4) after an hour and 40 minutes.
It was Djokovic’s first match since losing the Italian Open final to Rafael Nadal nine days ago.
