( CNN ) -- Substitute Didier Drogba missed a last minute penalty as Premier League champions Chelsea drew 1-1 at rivals Tottenham in a thrilling London derby on Sunday . Drogba , who had earlier scored the equalizing goal for the visitors , saw his spot-kick superbly saved by Heurelho Gomes -- after the Brazilian goalkeeper had clattered into compatriot Ramires in the penalty area . Chelsea had come into the match in poor form , with a run of just one win in six league games seeing them slide down the table from top to fourth position . And another defeat looked on the cards for Carlo Ancelotti 's side when Roman Pavlyuchenko gave Tottenham a 15th-minute lead . Strike partner Jermain Defoe looked just offside when collecting a long ball , but play was allowed to continue and his ball into the box was well controlled in one touch by Russian Pavlyuchenko , before his second touch found the bottom corner of Peter Cech 's net . Drogba , who was relegated to the bench by manager Ancelotti after a run of just two goals in 11 games in all competitions , was brought on in the second half and he made his mark in the 70th minute when his snapshot proved much too hot for Gomes to handle . Both sides had chances to claim all three points in an end-to-end contest but Drogba 's last-gasp miss ensured the points were eventually shared . The result means Arsenal stay top of the table ahead of their crunch visit to Manchester United on Monday . The Gunners lead Manchester City on goal difference , with Manchester United and Chelsea just a point behind in third and fourth -- in the closest title race in recent seasons . Tottenham remain in fifth place after the draw , a further four points behind , with Bolton in sixth after defeating Blackburn 2-1 on Sunday despite the second-half dismissal of midfielder Mark Davies . The other match on Sunday saw second-from-bottom Wolverhampton improve their chances of avoiding the drop , as Stephen Hunt 's goal gave them a 1-0 victory over West Midlands rivals Birmingham .
Didier Henry misses a late penalty as Chelsea draw 1 - 1 at Tottenham on penalties . Chelsea 's injury time spot - kick was saved by Brazilian goalkeeper Heurelho Silva . Chelsea had equalized for the visitors after Denis Pavlyuchenko scored for Spurs .