Huddersfield Town sit top of the Premier League after Chelsea made a dismal start to their title defence as they fell to a 3-2 defeat by Burnley.
Newly-promoted Huddersfield beat Crystal Palace 3-0 at Selhurst Park, while Burnley shocked Antonio Conte's champions at Stamford Bridge as Gary Cahill and Cesc Fabregas were both sent off.
Manchester City's eventually saw off new arrivals Brighton on the south coast with a 2-0 win to go second in Satrday's late kick-off.
Earlier in the day, Miguel Britos scrambled home a controversial injury-time equaliser as Watford held Liverpool in a 3-3 thriller at Vicarage Road.
The Reds looked as though they had put all speculation and uncertainty over Philippe Coutinho's future to one side to win, only for Britos to head home from point-black range in the dying moments to seal a 3-3 draw.
Wayne Rooney capped a memorable return to Goodison Park with the only goal in Everton's 1-0 win over Swansea, while a header from Ahmed Hegazi was enough for West Brom to beat Bournemouth 1-0 at The Hawthorns.
Arsenal had fought back to beat Leicester 4-3 in thrilling encounter at Emirates Stadium to open the season on Friday night, with Olivier Giroud the hero off the bench late on.