It's possibly the biggest game of the season today as Inter Milan take on their local and competitive rivals A.C. Milan.
LIVE: The Milanese Derby
The two clubs are set three points apart in the Serie A table, with Internazionale the team sat at the top, with Juventus sat below A.C. Milan on goal difference.
As you can see, AS Roma are way off the pace, sitting 17 points behind A.C. Milan, with no chance of winning the league now - they'll have to battle out the top four finish with Napoli and Sampdoria now.
A.C. Milan must face Juventus now, but if they lose today they may as well give up completely on challenging for the title, with Juventus and Inter being the only realistic contenders should A.C. Milan lose.
Here are the lineups today just before we head over to our match commentators:
Yes, thank you, Mauro Icardi will kick off the first-half here in Milan.
Isco has a free-kick on the right-wing - he'll hope to get someone's head on the end of this cross, preferably an Inter head! Biffi wins the header above Ogbonna, though. It's now with Kondogbia who was part of the wall, he spots the run of Carlos Fierro who was racing up the field. It's with Benzia now, who's playing instead of the absent Suso on the left-wing. He's cut inside here, given it to Xhaka, it's bounced his knee for Hummels to boot away. Rulli fires one up onto Niang's head, who nods it down perfectly for Granit Xhaka. Kondogbia plays it low to Fierro. Tamás has it on the left-wing now, maybe sending in a cross? He's done exactly that and has completed a one-two with Fierro now who hits it one the volley!!! GOAL!
Fierro has broken the deadlock very early on in the game! That's an important goal for Rösler's Rossoneri
!! A.C. Milan go top of the league!
Internazionale 0 - 1 (Fierro 6) A.C. Milan
Bellerín has a throw-in in his own half for A.C. Milan. It's a very risky high long throw to the head of Biffi, which is luckily headed to Kondogbia comfortably, otherwise Bellerín would have been in trouble there! Kondogbia gives it left 25 yards to Tamás, passed short to Benzia. The Frenchman cuts inside slowly before laying a pass off to Xhaka. A beautiful wide pass has found Niang's feet brilliantly! Niang races down the right side of the box, with Willems quickly bearing down on him... Sends in a cross to the six-yard box! Fierro heads it on target! Parried away but it's Benziaaaaa! Stopped again somehow! How has that not gone in?! Marvellous goalkeeping from Handanovic! Corner ball.
Kranevitter heads away the corner, which Kaboré latches onto. It's found Icardi who races upfield. Tackled by Kondogbia - wonderful challenge.
Tamás has a throw-in in a dangerous area. Kranevitter intercepts it, though and flies a powerful ball up towards Icardi. The Argentinian forward takes it well on his chest. He's found Shaqiri running in from the wing... He's got past the last defender... But Rulli stops it! Great save! It's away by Ramiro.
Xhaka is about to send in a cross from the corner. Icardi heads away at the near post but it's back in A.C. Milan's hands with Fierro, who sends a high pass out to the left to Xhaka. It's a high cross - floating in the air with uncertainty... Handanovic rushes out in the belief it's his ball... Fierro's got a nod on it! GOAL!
It's looped into the net! Shocking judgement from Handanovic! Fierro's added a second to the scoresheet for the Rossoneri
! 2-0 on 30 minutes!
Internazionale 0 - 2 (Fierro 30) A.C. Milan
Yassine Benzia knocks a ball to the halfway line, where Carlos Fierro waits. The Mexican drills a ball towards Niang, Ogbonna merely flicks it on before attempting to control the ball, Niang's tackled the centre-back! It's opened up for Niang!!! GOAL!
It's a third for A.C. Milan!!! A mistake from Ogbonna may have cost his team the game! Inter have a mountain to climb now!
Internazionale 0 - 3 (Niang 44) A.C. Milan
And that's the half-time whistle. A.C. Milan have absolutely destroyed their rivals and have gone top of the league for the first time this season in doing so!
Internazionale 0 - 3 A.C. Milan
Fierro rolls the ball to Granit Xhaka to begin the second half.
Suso replaces Yassine Benzia on the left-wing for A.C. Milan
Danilo throws it to Kranevitter, who heads it on. Biffi heads away from Icardi, but it's back with Inter now Kranevitter is on the ball. A long pass is cut out with Rami's head. Lukaku heads it back forward, Icardi also does the same, it's headed into the box... But no one sees Shaqiri! Xherdan Shaqiri!!! GOAL!
Inter have pulled one back! Is there time for a comeback? Lets see!
Internazionale 1 (Shaqiri 77) 1 - 3 A.C. Milan
We're in the final minute of added time - Inter know they have lost the game and maybe even the title. Suso's corner is headed away. It's fallen to Fierro. He runs back towards his own goal, there's men still inside the box for the Rossoneri
. He's passed it wide to Héctor Bellerín. Bellerín drills a knee-height cross into the near post... Suso is there! GOAL!
Suso has twisted the knife further! Milan just don't stop do they?! It's 4-1 at the Giuseppe Meazza!
Internazionale 1 - 4 (Suso 92') A.C. Milan
Inter restart the game from kick-off... And that's it!! A.C. Milan have defeated their dearest rivals in the most punishable way possible! Rösler's side have gone top for the first time this season! A remarkable achievement for the Rossoneri!
Internazionale 1 - 4 A.C Milan