Chelsea held to 0-0 draw by struggling Birmingham

LONDON, Apr 1 (Reuters) Leaders Chelsea were frustrated by relegation-threatened Birmingham City today, the below-par champions held to a 0-0 draw at St Andrews in a lunchtime kickoff.

Jose Mourinho's side extended their advantage to 10 points over Manchester United, who make the short trip to the Reebok Stadium to face Bolton Wanderers later today.

Chelsea almost stole the points at the death but Argentine Hernan Crespo wasted two good chances while defender Ricardo Carvalho headed over.

Birmingham, third from bottom and reeling from shipping 10 goals in their last two games in league and Cup, defended competently and produced the game's best moment when Olivier Tebily forced Petr Cech into a fingertip save from long range.

Third-placed Liverpool play away at West Bromwich Albion in a late kickoff (1615) Reuters PDS GC2037