Ashley Young scored his first Inter Milan goal in a 2-1 defeat to Lazio while Real Madrid were held to a 2-2 draw by Celta Vigo.
As we approach the business end of the season, the title races across the continent are beginning to hot up. What's the state of play in Serie A, La Liga and Bundesliga?
Barcelona twice came back from goals down to win 3-2 at Real Betis and cut Real Madrid's lead at the top of La Liga to three points.
Robert Lewandowski scored another double to send Bayern Munich through to the DFB-Pokal quarter-finals as Lazio missed the chance to go second in Serie A.
Eighteen-year-old Daniel Maldini, the son of AC Milan great Paolo, made his debut for the Rossoneri right at the end of a 1-1 draw with Hellas Verona.
Juventus' lead at the top of Serie A was cut to three points after they suffered a 2-1 defeat against Napoli.
Lazio have been fined 20,000 Euros (£16,972) after their fans were found to have racially abused Brescia forward Mario Balotelli.
Mario Balotelli took to social media to hit out at Lazio fans after play was halted due to racist chanting in Brescia's Serie A home defeat on Sunday.
Sky in Italy reveal what the top clubs in Serie A are planning for the January transfer window, with a number of big names set to be on the market.
Lazio beat Juventus 3-1 on Sunday to win the Italian Super Cup for a fifth time amid a background of protests and political outrage.
Cristiano Ronaldo scored his first Juventus goal since October to rescue a 2-2 Serie A draw against Sassuolo.
Paulo Dybala replaced Cristiano Ronaldo and scored the winner as Juventus beat AC Milan 1-0 on Sunday to move back to the top of Serie A.
Olivier Ntcham scored a 95th-minute winner as Celtic registered their first-ever victory in Italy to beat Lazio 2-1 and qualify for the Europa League knockout stages.
Two Celtic supporters have been stabbed in the centre of Rome ahead of the Europa League match with Lazio.
Real Sociedad went level on points with La Liga leaders Barcelona after snatching a 2-1 victory against Granada thanks to a late strike from Cristian Portu.
Javier Hernandez scored his first La Liga goal for Sevilla whose 2-0 win over Getafe took them level with second-placed Barcelona.
A group of Lazio supporters appeared to perform fascist salutes in Glasgow city centre prior to their Europa League group-stage clash with Celtic.
Christopher Jullien scored a dramatic 89th-minute winner as Celtic registered a huge Europa League victory over Lazio at Parkhead.
Team news, key stats and predictions ahead of Celtic vs Lazio as the Europa League group stage continues.
Neil Lennon would encourage Celtic players to walk off the pitch if they are ever subjected to racist abuse.