Two goals from Fraizer Campbell handed Cardiff City a shock 3-2 victory over Manchester City on Sunday.
Images from the football matches played across Europe over the weekend.
Premier league Sunderland were held to a 1-1 draw by north-east rivals Middlesbrough in the fourth round of the FA Cup on Sunday.
As a baby-faced striker Ole Gunnar Solskjaer made his name coming off the bench to score vital goals for Manchester United and his knack of making a dramatic impact appears undiminished.
Arsenal shoved Chelsea off the top of the table but Leicester City's Jamie Vardy, with a dazzling hat-trick, was the man of the moment on Saturday as the struggling Premier League champions blew aside Manchester City 4-2.
Everton and Tottenham Hotspur both missed the chance to move up to second place in the Premier League after they shared a battling 0-0 draw at Goodison Park on Sunday. The day's other game ended in a 1-0 win for Cardiff City over arch-rivals Swansea City in the first ever Welsh derby played in the English top flight.
In case they needed it, the short trip to Crystal Palace will re-focus Chelsea's globe-trotting players on matters at home as the Premier League slips back into gear this weekend after the second international break of the season.
Arsenal beat Fulham 2-0 at the Emirates and Manchester City beat Cardiff City 4-2 at the Etihad before Liverpool could only manage a 2-2 draw at Anfield having trailed 2-0.
Chelsea icon Frank Lampard scored for Manchester City to end his old club's perfect start to the Premier League season while Leicester City came from 3-1 down to beat Manchester United 5-3 on a remarkable day in the Premier League on Sunday.