Emotional Frank Lampard rescued a point for champions Manchester City against former club Chelsea on Sunday. (All images AFP)

Lampard's equaliser ensured a 1-1 draw against the Premier League leaders who lost their perfect start to the league season but still moved three points clear of second-placed Southampton.

It seemed Jose Mourinho's side were set for a fifth straight league win when Andre Schurrle put them ahead in the 71st minute, shortly after City had been reduced to 10 men by the sending off of defender Pablo Zabaleta.

But former Chelsea great Lampard, only playing for City after being loaned to them by New York City, the club he left for at the end of last season, drew the hosts level five minutes from time following a typically late run into the box.

In other matches, Crystal Palace scored an upset 3-2 win over Everton to get up in the Premier League table.