Napoli's loss was a gain for three UEFA Champions League challengers - Lazio, Fiorentina and Sampdoria - in Sunday's Serie A action.
Paris Saint-Germain failed to take advantage of defeats for Ligue 1 title rivals Marseille and Lyon as they were held 0-0 by Monaco.
Chelsea's League Cup final victory over Tottenham at Wembley was labelled "massive" by goalscoring captain John Terry.
City rivals Real Madrid and Atletico Madrid both suffered frustrating Sundays as they were held to draws in La Liga.
Jose Mourinho is back on the trophy trail with Chelsea after a 2-0 win over Tottenham on Sunday sealed League Cup success at Wembley.
Arsene Wenger hailed Arsenal striker Olivier Giroud after he ended a tough week with a goal in their 2-0 Premier League win over Everton.
Roberto Martinez feels Everton are not getting the points to match their performances, following a 2-0 Premier League defeat at Arsenal.
Olivier Giroud ended a difficult week on a high by netting the opening goal as Arsenal beat Everton 2-0 in the Premier League.
Liverpool's impressive victory over Manchester City earned the praise of boss Brendan Rodgers after their UEFA Europa League disappointment.
Liverpool's 2-1 victory over Manchester City was hailed as a "massive win" in the race for the Premier League's top four by Adam Lallana.
Crystal Palace's Mile Jedinak may face a four-match ban for an elbow on Diafra Sakho, but the midfielder has the support of boss Alan Pardew.
Porto forward Cristian Tello dealt a severe blow to Sporting Lisbon's title hopes on Sunday, scoring a hat-trick in his side's win.
PSG missed the chance to return to the top of Ligue 1 after they were held to a 0-0 draw at Monaco on Sunday.
Real Madrid failed to restore their four-point gap at La Liga's summit after being held 1-1 at home by Villarreal on Sunday.
Liverpool moved into fifth place in the Premier League on Sunday with a 2-1 victory over Manchester City at Anfield.
Manchester City must improve quickly to ensure Chelsea do not pull away at the top of the Premier League, says Manuel Pellegrini.
Diego Simeone expressed satisfaction with his Atletico Madrid side's performance at Sevilla, despite seeing them stumble to a 0-0 draw.
Chelsea can secure a trophy treble this season under Jose Mourinho after winning the League Cup, insists pundit Thierry Henry.
Roberto Mancini was left frustrated by his "hesitant" Inter side, after they slipped to a 1-0 Serie A home defeat against Fiorentina.
Juventus head into Monday's table-topping match at Roma facing the prospect of being without Arturo Vidal and Paul Pogba.