Arsenal took a huge step towards qualifying for the Champions League by beating Manchester United.
The Gunners followed up their victory over Chelsea to climb above Tottenham into fourth place and ramp up the pressure on Spurs ahead of their game at Brentford later.
The result surely ends any hopes United had of finishing fourth. They are six points behind Arsenal having placed a game more.
Arsenal flew out of the blocks and were ahead after just three minutes when a shot from Saka was tipped away by David de Gea but only to Tavares to tap in his first Arsenal goal.
Bukayo Saka made it 2-0 from the penalty spot on 31 minutes but United pulled a goal back immediately when Cristiano Ronaldo scored from a Nemanja Matic cross.
Bruno Fernandes missed a penalty in the second half before Granit Xhaka hit a blistering shot past De Gea from 25 yards to seal victory for Arsenal at the end of a breathless game at Emirates Stadium.
