LAZIO goalkeeper Fernando Muslera watched in horror as Marco Borriello’s weak penalty crept under his body and dribbled into the net to help city rivals AS Roma to a 2-0 win over the leaders yesterday.

Mirko Vucinic added another second-half spot-kick late on to round off a traditionally explosive derby which burst into life after the break. Lazio’s first league defeat since the opening day meant second-placed AC Milan cut the gap to two points and leapfrogged champions Inter Milan with a 3-2 win at bottom side Bari.

Juventus and Napoli are just a point behind third-placed Inter, who drew 1-1 with Brescia at the San Siro on Saturday, following home victories over Cesena and Parma.

After narrowly surviving a relegation dogfight last term, modest Lazio have been revelations in Serie A but their 10th outing of the season ended in huge disappointment.

Roma, runners-up last season but inconsistent this term, were without suspended captain Francesco Totti but managed to poke their noses in front on 52 minutes after Stephan Lichtsteiner handled Simplicio’s shot in the box.

Former Milan striker Borriello failed to get a clean contact on his spot-kick but Uruguay World Cup goalkeeper Muslera managed to dive over the ball and let it wriggle through.

Juventus came from behind to beat 10-man Cesena 3-1 with Alessandro Del Piero (penalty), Fabio Quagliarella and Vincenzo Iaquinta on the scoresheet.

Edinson Cavani’s double gave Napoli a 2-0 win over Parma.