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Juve, which has won only one of its past seven league games, is now third on the table with 58 points, one point behind AC Milan in second place after its 1-0 win against Empoli, and 17 points behind runaway leader Inter Milan.

Atalanta, which is in sixth place, broke the deadlock 10 minutes before the break as Mario Pasalic's free-kick found an unmarked Koopmeiners on the edge of the box, who scored with a powerful sweeping first-time finish.

Juve equalised after 66 minutes when Cambiaso was played through inside the box and managed to poke the ball in before Milik completed the turnaround four minutes later.

But Koopmeiners levelled in the 75th minute, firing home with a low angled shot to earn a share of the points.

Juventus could have snatched a winner in stoppage-time when Chiesa’s cross found Moise Kean unmarked inside the area, only for the striker to head off target.