Seb Larsson's late strike sent struggling Sunderland through to the League Cup quarter-finals with a 2-1 win over fellow Premier League side Southampton on Wednesday.
Manchester United's troubled season took another turn for the worse when they lost 2-1 to Sunderland in an error-strewn penalty shootout in their League Cup semi-final on Wednesday.
Tottenham Hotspur suffered a potential blip in their pursuit of third spot in the Premier League after a dire 0-0 draw at Sunderland on Saturday.
Sunderland goalkeeper Simon Mignolet produced a spectacular double save in stoppage time to earn his side a 1-1 draw at Everton after a pulsating end-to-end FA Cup quarter-final on Saturday.
Mikel Arteta hauled struggling Everton another point clear of the Premier League drop zone on Monday with a late equaliser in a 2-2 draw with Sunderland that denied the hosts a place in the top six.
Sunderland face an anxious final day of the Premier League season after a 3-1 defeat at Portsmouth Monday left them in serious danger of relegation.
Romelu Lukaku struck twice as Manchester United returned to winning ways after two successive Premier League losses with a 2-0 victory over Burnley at Turf Moor on Sunday.
Manchester City failed to fire in a frustrating 0-0 home draw with StokeCity on Wednesday that dealt a damaging blow to their Premier League title hopes and left them 10 points adrift of leaders Chelsea.
But it was not all good news for Mourinho, as substitute Marcus Rashford was sent off in the 71st minute for pushing his forehead into Phil Bardsley's head.
IMAGES from the English Premier League matches played on Wednesday.
Tottenham Hotspur's hopes of moving into the top four stalled in a 2-2 draw at bottom club Norwich City, while several VAR interventions overshadowed the action. Images from EPL matches played on Saturday.
Manchester United enjoyed perhaps their finest performance.
The victory takes Pep Guardiola's side into provisional second spot
The plucky underdogs were brought down to earth as Manchester City, Everton and Stoke City reached the League Cup semi-finals on Tuesday, ending the hopes of second-tier sides who felled fancied opponents in the last round.
Images from the English Premier League matches played on Saturday.
Champions Manchester United beat Premier League leaders Arsenal 1-0 at Old Trafford on Sunday with Robin van Persie once again tormenting his former team mates with a soaring first half header.
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.
Steven Gerrard's future at Liverpool may be in doubt but the captain turned back the clock to score in a 3-1 victory at bottom side Leicester City in the Premier League on Tuesday.
A match by match look at this weekend's English Premier League fixtures.
IMAGES from the EPL matches played on Saturday
Danny Rose scored a second-half equaliser to cancel out James Milner's penalty as Tottenham Hotspur came from behind to draw 1-1 with Liverpool at White Hart Lane on Saturday.