Manchester City stretched their winning run to eight games by thrashing West Ham 4-0 at the London Stadium on Saturday.
City have now won 12 of their last 13 games after the hard-fought 0-0 draw at Liverpool last month.
Pep Guardiola‘s men had scored 13 goals in their three previous visits to the London Stadium and had another three before halftime in another dominant display.
David Silva and Raheem Sterling continued their scoring streaks inside the first 20 minutes.
The roles were reversed from City’s flying wingers 11 minutes before halftime when this time Sane showed great composure to turn home Sterling’s pass and Sane completed the rout in stoppage time.
Liverpool, the most likely challengers for City’s title, swept to a 3-0 win at Watford that keeps them two points behind the leaders courtesy of goals from Mo Salah, Alexander Trent-Arnold and Roberto Firmino.
Manchester United are now 14 points adrift of the leaders as they failed to break down Crystal Palace in a 0-0 draw at Old Trafford.
The result sees Everton leapfrog United to move up to sixth with a 1-0 victory over Cardiff, while Claudio Ranieri won his first match in charge of Fulham in a 3-2 thriller over fellow strugglers Southampton.
At Wembley, Tottenham put Chelsea to the sword as goals from Dele Alli, Harry Kane and a delightful solo effort from Son Heung-Min lifted them above their London rivals into third place with Olivier Giroud’s late header proving mere consolation for the bumbling Blues.