Juventus suffered a new dip in their rollercoaster season with a 2-0 defeat at lowly Lecce on Sunday after goalkeeper Gianluigi Buffon was sent off on 11 minutes.
The Italy number one was dismissed for handling outside the area to stop David Di Michele's run on goal and from then on Juve were fighting a losing battle and barely had a shot.
Algerian midfielder Djamel Mesbah netted for the hosts on 32 minutes when he escaped the offside trap and Andrea Bertolacci doubled the lead early in the second period to power Lecce up to 15th in the table.
Even the dismissal of Lecce's Giuseppe Vives for two bookings midway through the second half failed to spoil the party on Italy's heel.
Once-mighty Juve, who beat champions Inter Milan last weekend to spur hopes of a revival in fortunes, stay sixth with their scudetto chances all but over and the fourth Champions League spot looking more distant.
Leaders AC Milan travel to Chievo later (1400 GMT) after Inter cut the gap at the top to two points with a 1-0 win at home to Cagliari on Saturday when goalscorer Andrea Ranocchia looked to be offside.