Manchester City's fingertip hold on their Premier League title was loosened further after a demoralising 2-0 defeat at Everton on Saturday left them hoping for a footballing miracle.
Everton ended third-tier Oldham Athletic's giantkilling FA Cup run with a 3-1 victory in their fifth round replay on Tuesday to tee up an all Premier League quarter-final against Wigan Athletic.
Everton enjoyed trouble-free progress to the FA Cup fourth round with a 5-1 victory at fourth tier Cheltenham Town on Monday.
Chelsea missed the chance to top the table at Christmas when, after having captain John Terry sent off in the 34th minute, their 11-game away English Premier League winning streak ended with a 0-0 draw at Everton on Monday. Terry was shown a straight red for a wild lunge at Leon Osman, taking the steam out of the Londoners, who had dominated until the dismissal but were then forced to hang on in the second half.
Everton made it two wins out of two in the Premier League on Tuesday with a 3-1 away defeat of Tottenham Hotspur, who have yet to pick a point this season.
Liverpool came within a point in the battle for third after they drew 0-0 at Aston Villa.
Chelsea's woes continued when the holders were dumped out of the Capital One (League) Cup fourth round following a shootout defeat by Stoke City on Tuesday, while Arsenal suffered a humiliating 3-0 defeat at second tier Sheffield Wednesday.
Manchester United may still be some way from the team that won 13 league titles under Alex Ferguson, but a combination of exciting attacking players and suspect defense means they are regaining the club's reputation for great entertainment.
Chelsea scrambled a stoppage-time winner to snatch a 1-0 victory over Everton on Saturday, showing their Premier League title mettle by claiming three points when they looked on course to suffer another damaging blow.
Jonatan Soriano's love affair with the Europa League continued as last season's top scorer grabbed a hat-trick on Thursday to help Salzburg become one of four teams to reach the knockout stages.
Aston Villa were crushed 6-1 by Southampton but joined Leicester City in celebrating Premier League survival on Saturday while Steven Gerrard's farewell party was spoiled as Liverpool lost 3-1 to Crystal Palace.
Manchester United won away for the first time this season when they beat Arsenal 2-1 at the Emirates Stadium on Saturday to climb to fourth in the Premier League table.
Manchester United ushered in a new era under interim manager Ryan Giggs with a 4-0 Premier League win over Norwich City on Saturday full of the verve and attacking intent often absent under the sacked David Moyes.
Jose Mourinho maintained his hold over Arsene Wenger with leaders Chelsea enjoying a routine 2-0 win over Arsenal on Sunday after the two old adversaries became involved in an ugly touchline spat.