Most ATG fast bowlers bowl some where near there Wicket per test limit (Why bowl second rate bowler when you have a ATG bowler in the side).
All bowler's Wickets per Test count is limmited by
(the number of Overs he can bowl per test) / (Strike Rate).
For most fast bowlers (including most ATG) that is about 4 wickets per test.
It is only in the really Great Teams (WI, Aus [recent + late 40's] where competition
for Wickets becomes a issue. For example if you look at
Imran, he does very little bowling in the fourth inning of a Test Match's and his bowling average is > 40 runs per wicket in the fourth innings. I doubt Imran could of bowled to many more overs than he did without a big drop in average / strike rate and more injuries.
For example if Fast Bowler had a
strike rate of 50 and
bowls 40 overs a game he will take
4.8 wickets per test. Very few fast bowlers have a strike rate of < 50 and very few can sustain 40 overs a Test. Fast bowlers who can take
4.8+ wickets a test are a
very, very rare breed.
I recently heard a speech (on the radio) by a long term of Australia's Cricket Trainer (State, national level), he stated in the last
40 years, Australia has only produced 2 Test class fast bowlers (Lillee, McGrath) who could sustain 40 overs a Test. I think he is right in that and I do not think any other country has produced more bowlers who could bowl 40 overs per game over a 10 year period.
Also Fast Bowlers who go flat out all the time (e.g. Holding, Akram, Steyn) generally bowl less that 35 overs per Test.
For a fast bowler to sustain
4.8 wickets a test he needs to be able to bowl well on most wickets / most days in a Test, he also needs to have one of
- Incredible Strike rate (Steyn, Strike Rate=40).
- Excellent Strike Rate, Excellent Stamina (Marshal, Strike Rate = 46, 38 overs per test).
- Incredible Endurance, Good Strike (Lillee, Haddle and probably McGrath ??? Strike
Rate = 51 - 53).
Spinners have it slightly easier but have other issues.