LONDON, Feb 2, 2010 (AFP) - Chelsea's hopes of opening up a four-point lead at the top of the Premier League were dashed on Tuesday when Carlo Ancelotti's side were held to a 1-1 draw at Hull.

Relegation-threatened Hull stunned the leaders by taking a 29th-minute lead when Stephen Mouyokolo powered home from a corner.

Didier Drogba, making his first appearance since his return from the African Nations Cup, equalised with a free-kick three minutes before half-time for his eighth goal in his last nine matches for the club.

However, Chelsea were unable to convert their second-half pressure into a winner.

The draw leaves Chelsea two points clear of Manchester United and six clear of third-placed Arsenal, who visit Stamford Bridge on Sunday.