Juventus and Atalanta have battled to a 0-0 draw to lose ground on Serie A's high-flying top two, while Romelu Lukaku helped fire rocking Roma to a much-needed victory.

Atalanta hit the woodwork but neither side could find the breakthrough in Bergamo.

Juventus remain fourth, four points behind Inter and Milan at the top after seven rounds. Atalanta are a point behind Juventus.

Roma beat Frosinone 2-0 for only their second league win of the season, while Bolognoa beat Empoli 3-0 and Udinese drew 2-2 with Genoa.

Atalanta and Juventus were both in form heading into Sunday's match: the hosts had won their last three matches in all competitions without conceding, while Juve had three victories in their last four outings.

Davide Zappacosta should have given Atalanta the lead in the 14th Minute but his first attempt was blocked by Juventus defender Danilo and he fired the rebound wide from close range.

Juve's best chance came early in the second half when Federico Chiesa's fierce attempt was palmed away by Atalanta goalkeeper Juan Musso.

His counterpart, Wojciech Szczesny, did even better 15 minutes from time as he managed to fingertip a stunning free kick from Luis Muriel onto the crossbar.

The ball bounced down and hit the goalkeeper on the back before going out.

Lukaku was again on target to set Roma on their way to a vital victory.

Jose Mourinho's team were in something approaching crisis after just one win in six league matches and had lost 4-1 at promoted Genoa in midweek.

Lukaku, who spent last season on loan at Inter, had netted three times in five matches for Roma since joining from Chelsea and he scored again in the 21st minute following an assist from Paulo Dybala.

Dybala also set up Roma's second with a free kick for Lorenzo Pellegrini to volley home with seven minutes remaining.

Riccardo Orsolini scored a hat trick to fire Bologna to a 3-0 win over hapless Empoli.

That ended a run of three goalless draws for Bologna. Empoli have lost six of their first seven.

Genoa were held to a 2-2 draw at Udinese after a stoppage-time own-goal.

Albert Gudmundsson scored twice for Genoa, with Lorenzo Lucca netting for the hosts before Alan Matturro put through his own net in the first minute of added time.