West Indies have pinpointed the twin threat of Sri Lanka's spinners as the obstacle to their progress into the ICC World T20 final.

After a miserable first half of their tour to England, during which time they lost the Test and one-day series convincingly, West Indies have progressed into Friday's semi-final against unbeaten Sri Lanka.

But if they are to reach the Lord's final, they must first find a way of scoring runs off mystery spinner Ajantha Mendis, the prolific Muttiah Muralitharan and sling-shot fast bowler Lasith Malinga.

Mendis already has 10 victims in the tournament while Malinga lies joint second in the leading wicket-takers in the tournament with 11, and they are expected to provide the main obstacle to West Indies' chances of progress.

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"It's very rare you get two world-class spinners like this in the same side," admitted West Indies vice-captain Denesh Ramdin.

"We want to get on top of them early so their captain has to take them off and bring them on later, so our plan is to get on top of them as they come on to bowl."

Mendis first made his introduction to world cricket in the one-day series in the Caribbean a year ago and has since bamboozled most of the world's top batsmen.

"He's a mystery spinner, but as a batsman you just go out there and try and play each ball on merit," said Ramdin.

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"He's not spinning the ball as much as everyone expected so what we're trying to do is play him as medium pacer, hit him down the ground for ones and twos and wait for the bad ball.

"Their bowling line-up is quite tricky with Murali, Mendis and Malinga but we have to try and back ourselves."

Fast bowler Fidel Edwards, who missed Monday's five-wicket victory over England at the Oval after pulling his back in the warm-up, did not train with the rest of the squad at Lord's today.

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Edwards has already had a scan on his back and West Indies' medical staff are hoping further treatment and 24 hours' rest will ensure he is back in contention for Friday's semi-final.

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