Mario Mandzukic struck the only goal restore Juventus' eight-point lead atop Serie A as the champions eased past Roma.

Juventus dealt a fresh blow to Eusebio Di Francesco's job security in a routine 1-0 win over an outclassed Roma at Allianz Stadium on Saturday.

Champions League semi-finalists last season, Roma have been a shadow of their former selves this term and were no match for the Serie A champions despite the narrow final scoreline.

Mario Mandzukic's commanding header, his eighth league goal of the campaign, gave Juve a deserved half-time lead and they were rarely troubled in restoring an eight-point gap to second-placed Napoli, who earlier beat SPAL 1-0.