Chelsea's woes continued as they lost at home to Aston Villa and Sheffield United slumped to the bottom of the table as they suffered a humiliating 8-0 home thrashing by Newcastle United in which eight different Newcastle players scored.
The first north London Premier League derby since 2014 not to feature Harry Kane produced an enthralling contest at The Emirates where the two unbeaten sides went toe-to-toe.
Arsenal twice led, first through Cristian Romero's 26th-minute own goal, and again thanks to Bukayo Saka's penalty early in the second half.
Mitoma then wrapped up the points as Brighton moved above Tottenham and Arsenal with 15 points.
Newcastle ran riot at Sheffield United in the weekend's final action as they put eight past the hapless Blades -- their biggest win in the Premier League since they put eight past Sheffield Wednesday in 1999.
Persons:
Arsenal Nunez, Tottenham Hotspur slugged, Harry Kane, Cristian Romero's, Bukayo, Ange Postecoglou's Tottenham, Son Heung, Postecoglou, Declan Rice, Mikel Arteta, West Ham, Mohamed Salah, Nayef Aguerd, Jarrod Bowen, Darwin Nunez, Alexis Mac Allister's, Diogo Jota, Klopp, Malo, Ollie Watkins, Mauricio Pochettino, Villa, Kaoru Mitoma, Dominic Solanke's, Billy Gilmour's, Milos Kerkez's, Neto, Roberto de Zerbi, Fati, Mitoma, Sean Longstaff, Dan Burn, Sven Botman, Callum Wilson, Anthony Gordon, Miguel Almiron, Bruno Guimaraes, Alexander Isak, Martyn Herman, Toby Davis
Organizations:
Spurs, Arsenal, Liverpool, West Ham Chelsea, Newcastle, Sheffield, Tottenham Hotspur, Premier League, West Ham United . Brighton, Hove Albion shrugged, Bournemouth, Aston Villa, Sheffield United, Newcastle United, London Premier League, The Emirates, Tottenham, Manchester City, West Ham, West, Chelsea, Villa, Brighton, Blades, Sheffield Wednesday, Thomson
Locations:
Stamford