Carlos Tevez scored the only goal as Juventus beat Catania in a bad tempered affair which saw both coaches sent to the stands.
Antonio Conte's men overcame a spirited performance from the league's bottom club to continue their seemingly unstoppable march to a third consecutive Scudetto.
Their sixth consecutive league win was confirmed thanks to Tevez's angled drive - his 16th of the season - just before the hour mark, which restored Juve's 14-point lead over Roma.
Catania finished the game with 10 men after Gonzalo Bergessio was sent off after 67 minutes for a second yellow for elbowing Giorgio Chiellini.
Both coaches had earlier been sent from the touchline following an incident in which Bergessio avoided a second yellow earlier after appearing to catch Leonardo Bonucci with his arm.
Elsewhere on Sunday, Fiorentina enhanced their outside chance of securing Champions League spot by defeating third-place Napoli 1-0 at Stadio San Paolo.
Joaquin's free header two minutes from time secured the points against Rafa Benitez's side, who played more than half the game with 10 men after Faouzi Ghoulam's straight red card.
The victory ensured the Florence club are now seven points behind Napoli.
Milan avoided a fourth consecutive Serie A defeat by drawing 1-1 at Lazio but remain in the bottom half of Serie A.
They went ahead just before half-time when Kaka's cross was directed in by the unfortunate Anbdoulay Konko, but Lazio hit back through Alvaro Gonzalez's first goal of the season in the second half.
Mario Balotelli almost won it for Clarence Seedorf's side but saw his fierce shot cannon back off a post.
A brace from Giacomo Bonaventura, including a 90th minute winner, gave Atalanta a 2-1 win at Inter.
The 24-year-old put Atalanta ahead after 35 minutes only for Walter Mazzarri's men to equalise instantly through Mauro Icardi.
Inter hit the woodwork three times as they went in search of a winner and were hit with a sucker punch at the death when the unmarked Bonaventura's header condemned the home side to only their second home defeat in Serie A this season.
Parma are level on points with Inter but stay sixth after seeing their three-game winning run ended after a 1-1 draw with Genoa.
The visitors went in front through Isaac Cofie's goal on the break after 21 minutes but the lead only lasted 10 minutes as Ezequiel Schelotto's stunning strike ensure it was honours even.
Elsewhere, Bologna climbed out of the relegation zone after Lazaros Christodoulopoulos bagged a 78th minute penalty to secure a 1-0 win against Cagliari, and Udinese won by the same score against Sassuolo who remain deep in trouble.
Veteran Italian striker Antonio Di Natale made the difference after 26 minutes but missed a penalty 10 minutes later.
The visitors had a penalty of their own with 18 minutes remaining but Sergio Floccari's spot kick struck a post.
Sampdoria made it three wins in four with a 5-0 demolition of Verona. The game was as good as over after three goals in the first 38 minutes from Gianluca Sansone, Renan Fernandes Garcia and Roberto Soriano.
Soriano grabbed his second just after half-time and defender Angelo Palombo rounded off the scoring before the hour mark to give Sinisa Mihajlovic's men their biggest win this season.
|Benitez denies Callejon spat|
|Brownhill stunner downs Burnley|
|Sunderland edge out Recreativo|
|Barton and Hoilett earn QPR draw|
|UEFA Champions League Review: Lafata treble puts Sparta in command, Slovan beat Sheriff|
|Gomis opens Swansea account at Exeter|
|Schneiderlin hints at Southampton discontent|
|Scolari makes Gremio return|
|Bojan strike in vain as Schalke beat Stoke|
|Tevez to miss friendly amid kidnap reports|
|Porto sign Jose Angel from Roma|
|UEFA Europa League Preview: Trencin v Hull City|
|Liverpool land Origi|
|UEFA Europa League Preview: Torino return to Europe after 20-year absence|
|Rodriguez and Schneiderlin not for sale, say Southampton|
|Rakitic: Not all about front three|
|Barkley pens new Everton deal|
|Guardiola relishing Chivas friendly|
|Drogba targets Premier League glory|
|Hull make Maguire and Robertson double swoop|
|Perisic blow for Wolfsburg|
|Ibrahimovic scores hat-trick as PSG hammer Kitchee|
|Al-Hilal coach sacked over referee row|
|La Liga boss wants cream of the crop|
|Valencia granted work permit, completes West Ham move|
|Atletico complete deal for Griezmann|
|Reus focused on fitness battle despite ´major European interest´|
|Barcelona announce club-record revenue|
|Bony could be sold for right price, says Jenkins|
|Confidence key for Newcastle, says Taylor|
|Saivet out for four weeks with knee injury|
|Genk part company with Ferrera after just one game of season|
|Gold clarifies Twitter gaffe|
|Vidic adapting to different style at Inter|
|Toulouse bring in Matheus|
|Butragueno backs Rodriguez to cope with pressure|
|Benteke aiming to come back stronger|
|Valdez joins Frankfurt|
|Jovetic ready to shine|
|Simeone hails Griezmann qualities|
|Monk unsure over De Guzman future|
|Benitez: Michu will take time to adjust|
|Diaby confident of staying fit|
|Shaw not fit enough, says Van Gaal|
|MLS Preview: RSL look for attacking spark|
|Monk slaps ´astronomical´ price on Bony´s head|
|Australian clubs looking at Ronaldinho|
|Sinclair enjoying ´one of the best pre-seasons´|
|Spiranovic surgery a success|
|Seattle Sounders 0 Los Angeles Galaxy 3: First-half blitz fires Californians to victory|
|Lemina thrilled with Bielsa effect|
|Bayern´s Green chomping at the bit|
|Palace complete US tour with easy win|
|Carragher: Liverpool didn´t want me|
|Simeone: Atleti´s La Liga triumph was no fluke|
|Sturridge: ´I´ll step up´|
|Van Gaal: Formation gives United flexibility|
|Mathieu insists age is no barrier|
|Martinez the deal sealer, says Besic|
|Coaches embrace blockbuster Serie A start|
|Ronaldinho to leave Atletico Mineiro|
|Lorient capture Ayew|
|Celtic loan Berget, sell Watt|
|Pires signs up for Indian Super League|
|Allegri set for early San Siro reunion in maiden Juve campaign|
|Bakayoko makes Monaco move|
|Bakayoko makes Monaco move|
|Lens granted Ligue 1 place|
|UEFA Champions League Preview: Red-hot Salzburg face Qarabag|
|Parma bring in Cassani from Fiorentina|
|De Vrij set for Lazio|
|BREAKING NEWS: Everton complete Besic signing|
|Kongolo pens Feyenoord extension|
|Redknapp confirms Granero exit|
|Advocaat confirmed as Serbia coach|
|CSL Preview: Henan aim to escape drop zone, Liaoning host Guangzhou RandF|
|Arribas makes Sevilla switch|
|Chambers joins Arsenal|
|Ospina buoyed by Arsenal recruitment|
|Liverpool´s loss is our gain, says Redknapp on Remy|
|Ferdinand: I would still be at United with Giggs in charge|
|Pepe targets Super Cup glory|
|Martinez prioritising striker signing|
|Perez not looking to leave Benfica|
|Klopp itching to work with full Dortmund squad|
|Mourinho: It feels like Drogba never left|
|FIFA asks for FIGC review into alleged racist remark|
|Hull to review Maguire deal|
|Wenger prepared to gamble on Chambers|
|Atletico agree Griezmann deal|
|Irvine planning further striker addition|
|Campbell: Black professionals scared to talk about racism|
|Mata backs Herrera to star in Premier League|
|Injured Rafael returning to Manchester|
|Schmidt demands more from Leverkusen|
|Copa Libertadores Preview: Defensor Sporting banking on home record|
|Remy´s Liverpool move off, confirms Rodgers|
|Inzaghi demands nastiness from Milan|
|MLS Review: Timbers triumph in Montreal, Dallas thwart Vancouver|
|Jovetic ready to lead City line - Pellegrini|
|Lewandowski impresses Ribery, Alaba|
|Colombian Primera A Review: Three clubs remain perfect, Atletico Nacional get off the mark|
|Rodgers: ´We can score goals´ without Suarez|
|Chilean Primera Division Review: Canales brace powers Universidad Chile|
|Atletico Madrid need penalties to edge past Earthquakes|
|Liga MX Review: Monterrey, America stay perfect|
|Paraguayan Primera Division Review: Capiata set pace|
|Brazilian Serie A Review: Cruzeiro win again, Kaka scores|
|Sterling goal sees Liverpool past Olympiacos|
|Peruvian Primera Division Review: Los Caimanes notch maiden win, Inti Gas claim top spot|
|CAF Champions League Review: Zamalek held, Vita Club leave it late|
|Jovetic at the double as Manchester City thrash Milan|