Premier League Champions Chelsea won just their second league game this season as they beat nine-man Arsenal in a fiery game at Stamford Bridge.
Arsenal defender Gabriel Paulista received his marching orders by referee Mike Dean after impetuously kicking out at Diego Costa. Both players had just received a yellow card after squabbling over an incident, which involved the Chelsea striker pushing his hand into the face of Laurent Koscielny before barging the Frenchman to the ground.
The Arsenal sending-off changed the momentum of an even game, handing the impetus to a Blues side shorn of confidence. The Stamford Bridge capitalised with Kurt Zouma nodding in a Fabregas free kick at the near post.
Zouma celebrates after scoring his first Premier League goal (Chelsea FC)
Arsenal captain Santi Cazorla was also sent-off towards the end of the game for a second bookable foul. And the Gunners miserable day was complete after a speculative Eden Hazard shot delected off Callum Chambers to nestle into the back of the net.
After the game, an unhappy Arsene Wenger commented that the behaviour of Diega Costa was 'disgraceful'.
"He [Costa] will do the same again next week and the week after that and he always gets away with it," said Wenger. "Costa can do what he wants and yet he stays on and everyone who responds to him has to be sent off. He hits Koscielny in the face yet he gets away with it."
However, this contoversial win will inject much needed belief into Jose Mourinho's title-winning side.
In the evening kick-off, West Ham beat Manchester City 2-1 at the Etihad Stadium with a battling rearguard performance. This is the third time this season that the Hammers have beaten a 'big club'. Victor Moses opened the scoring with a low drilled shot, before Diafara Sakho doubled the lead for West Ham with a hooked shot from six yards. Kevin de Bruyne scored his first goal for the Citizens but it was not enough to prevent a defeat.
These were the first Premier League goals that Manchester City have conceded this season, and the defeat ruins the Manchester club's perfect start to the season, giving encouragement to the chasing pack
Victor Moses opens the scoring for the Hammers (West Ham).
In other Premier League games, Leicester came back from two goals down for the second time in a week to draw at Stoke, while Swansea and Everton shared the spoils in a scoreless match.
In the Midlands derby, West Brom beat Aston Villa courtesy of a Saido Berahino goal. This was just the second time Albion had won at Villa Park since 1979.
Saturday Premier League round-up
Meanwhile, Newcastle and Sunderland struggles continued as both clubs lost against Premier League new boys Watford and Bournemouth respectively. Both North East clubs continue to prop up the Premier League table after managing just two points in six games.