London - Leaders Chelsea extended their perfect start to the season as they beat Tottenham Hotspur 3-0 on Sunday to make it six wins out of six in the English Premier League. Ashley Cole, Michael Ballack and Didier Drogba scored the goals to keep Chelsea three points clear of champions Manchester United, who edged out Manchester City 4-3 in a dramatic and contentious derby.
Cole put Chelsea ahead with a fine diving header in the first half after a slick move.
Tottenham thought they should have had a penalty early in the second half when Robbie Keane looked to have been fouled by Ricardo Carvalho but referee Howard Webb waved play on.
The visitors' disappointment was compounded 13 minutes into the second half when Ballack doubled Chelsea's lead and Drogba tapped in from close range after a bold run five minutes later.
United had briefly taken top spot on goal difference after an exciting derby that had ended in contentious fashion.
In the first meeting of the two Manchester rivals since City spent well over 100 million pounds (163 million dollars), City had equalized three times and looked to have sealed a point when Craig Bellamy scored his second goal of the game in the last minute of normal time.
Four minutes of injury time were announced but five and half had been played when substitute Michael Owen slipped the ball past Shay Given for a late, late winner.
Wayne Rooney put United ahead after two minutes but Gareth Barry capitalized on a goalkeeping blunder by Ben Foster to level the scores.
Darren Fletcher restored United's lead just four minutes into the second half but City were level within four minutes when Bellamy rifled in a brilliant strike from 25 metres.
Fletcher then looked to have stolen the win when he headed his second goal but Bellamy took advantage of a terrible error from Rio Ferdinand to outpace the England defender and slip the ball in for his second.
Time appeared to be up but Ryan Giggs found Owen on the left-hand side of the area and the former Liverpool striker slipped the ball into the corner for the winner.
City manager Mark Hughes was disgusted with referee Martin Atkinson for the time he added on.
"In the end we feel really frustrated and, if it is not a too strong word, robbed because the ref has played seven minutes," Hughes said.
"Alan Wiley (the fourth official) tried to explain he added the time for our celebration but I looked at the video and that lasted 45 seconds.
"Where he has got the seven minutes from I have no idea. We are desperately disappointed because I felt we deserved something."
United manager Sir Alex Ferguson was delighted with his team's last-gasp effort.
"What can you say?" he said. "We have given three goals to them. It could have been an embarrassment, 6-0 or 7-0, if we defended our proper way.
"We could have won by a big score but by making mistakes, which was the essence of the game, we probably were in the best derby game of all time."
Wolves beat Fulham 2-1 and Everton saw off Blackburn Rovers 3-0 in the day's other matches.
