With a surprising 1-0 loss to Newcastle on Sunday, United ceded some of the initiative in the race for second place in the Premier League and left its manager cursing the "gods of football" on his latest fruitless trip to the northeast.
Tottenham has collected seven points from a possible nine, following victory over Manchester United and a draw at Liverpool, to climb into the third Champions League qualification place.
Sanchez, who joined United over neighbor and Premier League leader Manchester City, said he was "thrilled to be joining the biggest club in the world."
Hazard was also involved in the second goal only three minutes later as some intricate link play ended with Brazil midfielder Willian producing a venomous right-footed shot that gave Brighton goalkeeper Mat Ryan no chance.
Walcott, whose contract runs through to the end of June 2021, is the second high-profile signing by Everton in the January transfer window, after Turkey striker - Cenk Tosun.
It was a first Premier League win over Arsenal for Bournemouth, and a first victory against a top-six side this season that lifts Eddie Howe's team into 13th place.
Manchester City threatened an amazing comeback after goals by substitute Bernardo Silva, in the 84th, and Ilkay Gundogan, in the first minute of stoppage time, but Liverpool held on in a nervy finale.
Arsenal isn't even in City's slipstream but floating far from the leaders, sitting adrift by 23 points and actually closer to the relegation zone by four points.
All four goals came in the final half hour of a game that left third-place and defending champion Chelsea 16 points behind Manchester City and Arsenal 23 adrift of the leaders.
Raheem Sterling gave City lead inside a minute - he has now scored the earliest and latest goals in the league this season - before Christian Kabasele's own goal and a close-range finish from Sergio Aguero put City 3-1 up.
Ragnar Klavan headed home the winning goal at Turf Moor as Liverpool earned a hard-fought victory without three of its "Fab 4" attack, with Roberto Firmino demoted to the bench and both Philippe Coutinho and Mohamed Salah declared injured.
Failing to clinch their 19th straight victory, City could not equal the landmark set by Pep Guardiola's Bayern Munich in the 2013-14 season of the record winning streak in Europe's top five leagues.
Chelsea, another team fighting for a finish in the Champions League qualification positions, had it much easier in a 5-0 victory over a depleted Stoke side at Stamford Bridge.
By beating Swansea 4-0 on Wednesday, City racked up its 15th straight victory — a feat never achieved in the 129-year history of England's top division.
Pogba was sent off for a studs-first tackle on Hector Bellerin in United's 3-1 win over Arsenal on Saturday.
It was a pulsating contest from start to finish at Emirates Stadium, with a glut of shots on goal, amazing goalkeeping, a sending off, and textbook counter-attacks.
Manchester City has re-established its eight-point lead over second-place Manchester United thanks to their 12th straight league win.
Pep Guardiola's Manchester City defeated Huddersfield 2-1 on Sunday to equal a club record 11th straight Premier League win.
Salah scored the opening goal for Liverpool - his 15th in 20 appearances this season - against the club that sold him last year.
Zlatan Ibrahimovic returned from a seven-month injury layoff in Manchester United's 4-1 victory over Newcastle in the English Premier League on Saturday.
Top News
Latest News
