Just working on my Test Bowlers' Ratings. It's taking a while.
Right now, I'm stuck on wickets per match. I have adjusted bowling averages across the board, but I'm wondering if it's worth adjusting wickets per match.
I have adjusted the bowlers before WWI. It's quite simple. As 10% more wickets fell per match on average prior to WWI, then I simply took 10% off each pre-WWI bowler's WPM average. For example, Sidney Barnes has been adjusted down to 6.30 from 7.00.
The problem I have is comparing, for example, Richard Hadlee and Malcolm Marshall. Hadlee has the higher WPM, but that is basically due to him being so far ahead of the other NZ bowlers during his time playing.
Marshall, on the other hand, competed with other greats such as Garner, Holding, Ambrose, etc.
So, how to adjust those WPM? An almost impossible task, and is does it need to be adjusted anyway, since one could argue that Hadlee had to carry a bowling attack and Marshall always had other bowlers helping him by always keeping pressure ont the other batsmen.