Stefano Pioli's reign as AC Milan coach got off to an underwhelming start as Marco Calderoni's stunning late equaliser secured struggling Lecce a 2-2 draw in San Siro.

Krzysztof Piatek had seemingly secured former Inter boss Pioli – who replaced Marco Giampaolo during the international break – a debut win with his 81st-minute goal, but Calderoni struck in stoppage time to ensure Milan dropped points for the fifth time in eight games this season.

The impressive Hakan Calhanoglu powered Milan into the lead with a fine strike following Lucas Biglia's pass, but they struggled to maintain their lively start and faded towards half-time.

Khouma Babacar found the net from close range after Gianluigi Donnarumma saved his penalty in the second half, and then Piatek's strike was cancelled out by Calderoni's long-range drive to prevent Milan from moving back into the top half of the table.