LONDON (Reuters) - Raheem Sterling scored a second-half hat-trick as leaders Manchester City beat Watford 3-1 on Saturday while Liverpool kept the gap at one point by overcoming Burnley 4-2 on Sunday.
Arsenal beat Manchester United 2-0, lifting the Londoners into fourth place and ending Ole Gunnar Solskjaer’s unbeaten domestic run as United’s caretaker manager.
The following are five talking points from the weekend:
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Manchester United defender Chris Smalling was shoved by a pitch invader at Arsenal while Aston Villa's Jack Grealish was punched in the face by another in a Championship game at Birmingham City.
Gordon Taylor, chief executive of the Professional Footballers’ Association (PFA), saw a growing problem.
“We have seen an increase in such behaviour at clubs this season. It’s been racist abuse, anti-Semitism and now its real fear for the safety of players,” he told Sky Sports television.
Grealish went on to score the winner for Villa while Smalling said on Twitter that commenting on his attacker “would only add to the attention he craved”.
“What next...a knife?,” declared the back page of the Sun tabloids.
Should there be a points deduction for a side whose supporter assaults a player? Or would that merely encourage some to pretend to be fans of another club in the hope of deliberately triggering a sanction? Ground closures?
What happens if a key player, such as Grealish, has to leave the field of play due to an injury sustained in an assault by a pitch invader? Or reacts, and is then shown a red card?
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On paper, Arsenal have the easier run-in with only clubs below them to come while Tottenham still have to play Manchester City and Liverpool and are still in the Champions League.
The Gunners have not lost at home since the opening day of the season, and won their last nine at the Emirates, with manager Unai Emery winning plaudits for his bold tactics.
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“Maybe a backlash from Wednesday night,” said Solskjaer after Sunday brought a first domestic defeat to his remarkable run as Manchester United caretaker.
When you have pulled off the sort of Champions League comeback United achieved against Paris St Germain to reach the quarter-finals, the Norwegian can afford a shrug.
“Solskjaer has connected the club, the results have been incredible and there was always going to be a defeat. But it’s not been a defeat that’s embarrassing,” said former United team mate Gary Neville.
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Burnley manager Sean Dyche has been around football long enough to have seen most things but he admitted to being “completely discombobulated” by current interpretation of the offside rule.
“I just liked it in the old days when they would just be offside and everyone would go ‘right they are offside’. It has just got so technical now,” he told Reuters. “I marvel at when they (officials) get it right because I think it is just so confusing.”
Sterling’s first goal against Watford at the Etihad triggered controversy, with referee Paul Tierney changing his mind about an offside call after a discussion with his assistant.
The decision appeared to be over-ruled because Watford defender Daryl Janmaat played the ball against Sterling, who appeared offside, as the City striker aimed for goal.
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Some people thought Liverpool had lost their bottle after recent results dropped them go from seven points clear in January to four behind Manchester City on Saturday, but they showed plenty of fighting spirit on Sunday.
Burnley can be a tricky side and Liverpool were behind after six minutes on a gusty and wet afternoon at Anfield, but battled back to get the job done.
"Nobody gets rid of us if we play as we played today, because we had the perfect mixture of fighting the opponent, fighting the circumstances and playing football," said Liverpool manager Juergen Klopp.
“We have no problem with confidence.”
Reporting by Alan Baldwin, editing by Ed Osmond