Swansea went ahead five minutes before the break when an attempt to clear by Liverpool's 75 million pounds ($104.88 million) defender Virgil Van Dijk landed at the feet of Mawson who swept the ball home for his sixth league goal this season.
Liverpool opened up a seven-point gap at the top of the English Premier League with a 1-0 win at Brighton & Hove Albion on Saturday, while Arsenal's poor away form continued with a 1-0 defeat at West Ham United.
News of all that's transpired on and off the football field
Former Manchester United striker Ole Gunnar Solskjaer is set to take over as manager at Premier League Cardiff City, Norwegian media reported on Wednesday.
Normally the candidates for goal of the season are spread throughout the 10 months of the campaign, but this weekend's Premier League matches produced six memorable strikes in little over 24 hours.
Mourinho singled out midfielder Nemanja Matic, who created the first goal for Romelu Lukaku and added the second himself with a late header, as one of the few players he was satisfied with.
Portsmouth reached the FA Cup final for the first time in 69 years after beating West Bromwich Albion 1-0 in the semi-final.
Portsmouth reached the FA Cup final for the first time in 69 years on Saturday when a 54th minute goal from Nwankwo Kanu gave them a 1-0 semi-final win over West Bromwich Albion at Wembley Stadium. Portsmouth will now play either Cardiff City or Barnsley, who meet in an all-Championship semi-final on Sunday, in the final at Wembley on May 17.
A Roberto Firmino hat-trick proved the highlight of Liverpool's 5-1 demolition of Arsenal as the Premier League leaders opened a nine-point gap over Tottenham Hotspur, who lost 3-1 to Wolverhampton Wanderers.
Premier League leaders Arsenal host north London rivals Tottenham Hotspur in the standout tie in the draw for the third round of the FA Cup made on Sunday.
News of all that's transpired on and off the football field
Mohamed Salah struck four times in rampant Liverpool's 5-0 thrashing of Watford that lifted them back into third spot in the Premier League on Saturday.
Middlesbrough were rewarded for beating Manchester City with a trip to FA Cup holders Arsenal while Chelsea's conquerors Bradford City host Sunderland or Fulham after the fifth round draw on Monday.
Sergio Aguero scored five times in 20 minutes including an eight-minute hat-trick as Manchester City came from behind to thrash Newcastle United 6-1 and go back to the top of the Premier League table on Saturday.
Following is a match by match look at the English Premier League's weekend fixtures:
Meanwhile, Manchester United winger Jesse Lingard says his "heart is at Old Trafford" and negotiations are ongoing over a new deal with the club that will extend a contract that runs out at the end of next season.
Holders Arsenal's long unbeaten run in the FA Cup continued but they were frustrated by stubborn Championship leaders Hull City on Saturday, drawing 0-0 in a dreary fifth-round tie at the Emirates Stadium.
Favourites Chelsea will play Tottenham Hotspur in the FA Cup quarter-final tie at Stamford Bridge next month.
Cambridge Solutions, a Rs 1,200 crore (Rs 12 billion) integrated IT & BPO firm, has sold a part of its government vertical, run under its subsidiary Albion in the United States to Affliated Computer Services for $30 million.
Manchester City maintained their perfect start to the season with a 2-0 victory over promoted Watford as champions Chelsea suffered a shock 2-1 home defeat by Crystal Palace on Saturday.
News of all that's transpired on and off the football field
IT services company Scandent Solutions Corporation Ltd on Monday said its division Albion bagged an order worth $34 million from the state of Tennessee in the US for developing and implementing a vision integration platform.
'Critics will always appear because people don't like it when the same people win all the time, but I'm sure Pep is going to win'
Meanwhile, Real Mallorca made a dream return to La Liga with a 2-1 victory over Eibar at the Estadi Son Moix on Saturday, less than two months after sealing back-to-back promotions to rejoin Spain's soccer elite.
Chelsea overpowered West Ham United and Manchester City outclassed West Bromwich Albion as the Premier League title rivals signalled their intent at the start of a hectic holiday programme on Friday.
Valencia sign Kondogbia on loan from Inter
Photos from the English Premier League matches played on Saturday
Roy Keane has agreed terms to take over as manager of second division Sunderland
Premier League Swansea City fell victims to the first major giant-killing of the FA Cup third round on Sunday when they lost 3-2 away to League Two (fourth tier) side Oxford United.
Chelsea moved within three points of clinching the Premier League title with a 3-0 victory that condemned Middlesbrough to relegation on Monday after goals from Spaniards Diego Costa and Marcos Alonso plus a tap-in by Nemanja Matic.
San Antonio Spurs guard Tony Parker apologized on Monday after a three-year-old photo surfaced of him making the same anti-Semitic gesture that has landed former France striker Nicolas Anelka in trouble.
Arsenal and Manchester City meet at The Emirates on Saturday when both teams will seek to roar into life after making spluttering starts to their Premier League campaigns.
Swansea City's hopes of salvaging their place in the Premier League suffered a potentially grievous blow as Ryan Fraser's deflected strike earned Bournemouth a 1-0 win on Saturday to secure another season of top-flight football for the Cherries.
News of all that's transpired on and off the football field
Mario Balotelli enjoyed a rare moment of ecstasy in a Liverpool shirt by inspiring a 2-1 win over Swansea City in the League Cup on Tuesday while Chelsea had to call for reinforcements to see off Shrewsbury Town.
Images from the EPL matches played on Saturday
Tottenham Hotspur striker Harry Kane's determination to prove his doubters wrong after a slow start to the campaign has driven the England international to the top of the scoring charts in a remarkable season for the player and his club.
Images from the English Premier League matches played on Saturday.
Five talking-points from the Premier League weekend after Manchester City suffered a shock home loss to Crystal Palace, meaning that Liverpool stayed four points clear at the top following their win over Wolverhampton Wanderers.