1. Dale Steyn(South Africa)
He is the top ranked bowler in ICC rankings in tests. His speed and accuracy makes him a dangerous bowler. Even on dead pitches that does not even offer help to him, he still manages he runs in fast and makes the batsman uncomfortable. If the pitch suits him with a lot of green grass or little bit of moisture, he becomes almost impossible to handle. This fast bowler has the ability to trouble the best of batsmen in the world.
2. James Anderson(England)
One of the best bowlers that world has today. He can swing the bowl both ways. In the recently concluded series against India he was the leading wicket in the series. His abilty to reverse swing ball and do it on consisent basis makes him dangerous. The openers has to play him careful with the new ball otherwise the opponent team would be in trouble.
3. Mitchell Johnson(Australia)
A left arm fast bowler who has been in top form in the past 5 to 6 months in test cricket. He can bowl up and around 140kmph regularly. His ability to bowl yorkers and bouncers does not allow the batsman to settle. In the Ashes 2013-2014, he was the leading wicket taker and was bowling at his best. He is one of the nominees in the LG ICC awards for best bowler including Dale Styen and Bhuvneshwar Kumar.
4. Bhuvneshwar Kumar(India) –
Bhuvneshwar Kumar is one of young and most talented Indian bowler today. He can swing the ball both ways. If the pitches are suitable he can take wickets and destory the opposition with his lethal swing. In the recently concluded India-England series, he was leading wicket taker for India. He may need to add a bit more pace to his bowling but if he can do that he will become even more devasting.
5. Ragana Hearth(Sri Lanka)
He is one of the prime spinners for Sri Lanka after the retirement of great Muttiah Muralitharan. His biggest strength is bowling stump to stump. If he does not pick up wickets he holds one end up and does not allow the batsman to score freely. The arm delivery which slides on the batsman makes him a dangerous bowler. Bowling long spells and when the team needs a wicket the captain goes to him and he does not usually disappoint the captain.