Chelsea left the north London with the draw they came for, which takes them a step closer to the title. Arsenal were unable to break down their opponents in an attritional game, while Jose Mourinho's side rarely troubled David Ospina. Sportsmail's Sami Mokbel gives his verdict from the Emirates Stadium... Arsenal . David Ospina - Lucky not concede a penalty after clattering into Oscar - but produced a good stop to deny Ramires. 6.5 . Hector Bellerin - The youngster was preferred to fit again Mathieu Debuchy and justified his manager's faith. 7 . David Ospina was fortunate to get away without conceding a penalty when he clattered Oscar . Hector Bellerin does well to clear the ball off the line to prevent Oscar's lob putting Chelsea ahead . Laurent Koscielny - Cruised through the first half owing to Chelsea playing with no striker. Had more to think about following's Drogba's introduction. 7 . Per Mertesacker - Patched up after sustaining an ankle injury last weekend. Showed little sign of the problem in a strong performance. 7.5 . Nacho Monreal - Steady game for the Spaniard. Looks to be edging ahead of Kieran Gibbs for position as No 1 left-back. Booked. 6.5 . Francis Coquelin - Had to walk a disciplinary tightrope after a first-half booking - but remained industrious as ever.7 . Francis Coquelin breaks up a Chelsea attack but his holding role was made more difficult by a booking . Santi Cazorla - He's had more influential days, but kept Arsenal's midfield ticking over. Booked. 6.5 . Aaron Ramsey - Utilised, once again, in an unfamiliar right-wing role. It didn't throw him off his stride too much. Booked. 6.5 . Mesut Ozil - Not quite £42.5million, but he's getting there. Heavily involved for the Gunners but couldn't find a breakthrough. 7 . Alexis Sanchez - Fresh from his Wembley double, the Chilean wasn't quite at his best against Chelsea. 6.5 . Olivier Giroud - Endured a titanic battle with Terry. The Frenchman put himself about against the champions-elect. 6.5 . Olivier Giroud shields the ball from a masked Cesc Fabregas, but the Frenchman had little joy up front . Subs: . Danny Welbeck (on for Coquelin, 76) - Injected pace into Arsenal's attack. 6.5 . Theo Walcott (on for Giroud, 84) - Thrown on late as the Gunners searched for victory. 6.5 . Subs not used: Szczesny, Debuchy, Gibbs, Wilshere, Flamini . Manager: Arsene Wenger - His Mourinho hoodoo continues - but the French manager can be happy with his side. 6. Chelsea . Thibault Courtois - Made some routine saves but has had much more eye-catching afternoons. 6.5 . Branislav Ivanovic - Solid and steady as ever from the Blues right-back. Excellent tussle with Sanchez. Booked. 7 . Gary Cahill - A mature display from the England central-defender. Kept his cool in the heat of battle. 7.5 . John Terry - Played a crucial role in quelling Giroud's aerial threat. A typical all-action display from the Chelsea skipper. 8 . John Terry and Gary Cahill did well to prevent Giroud from becoming a threat as Chelsea kept things tight . Cesar Azpilicueta - Been one of Chelsea's most consistent players this season. Was so again at the Emirates. 7.5 . Nemanja Matic - Shielded his back-four with the expertise we've come to expect. Didn't put a foot wrong. 7 . Cesc Fabregas - Booed on his return to Emirates and booked for diving. Wasn't how he'd dreamed it last night. 6 . Ramires - Missed a glorious chance to put Chelsea ahead in the first half. Defensive instincts were vital for Chelsea. 6.5 . Ramires carries the ball past Arsenal left back Nacho Monreal in the top of the table clash . Willian - A willing runner in attack and defence for the Blues. Showed some quality on ball, too. Booked. 6.5 . Eden Hazard - He's had more productive days, but his defensive discipline was important for the visitors. 6 . Oscar - Playing in an unfamiliar role as central striker, he should have won Chelsea a penalty. Did little much else. 6 . Eden Hazard was unusually quiet, with Arsenal keeping a close eye on him, but still showed flashes of quality . Subs: . Didier Drogba (on for Oscar, 46) - So often Arsenal's tormentor. Could replicate past heroics. 6 . Kurt Zouma (on for Fabregas, 90) - Brought on to see out the final few minutes. 6 . Juan Cuadrado (on for Willian, 90) - Came on for the final few seconds. 6 . Manager: Jose Mourinho - Starting with no striker said it all. Came for a point - and got it. Job done. 7 . Referee: Michael Oliver - Could easily have awarded three penalties on busy afternoon four the official. 6.5 . Oscar had to be replaced at half time after a suspected concussion after his clash with Ospina .
Chelsea captain celebrates wildly at the final whistle after superb display . Arsenal defend well but unable to break down Jose Mourinho's side . Mesut Ozil the Gunners' best player, but couldn't unlock Chelsea .