New Green Sheets come in to force on the 1st of each month, and include a maximum of the last 20 League matches, up to and including the 23rd of the previous month.
Because they are Rolling Averages, the most recent scores replace the respective oldest scores, so the average will not necessarily rise or fall in direct relation to current form ... also, it doesn't matter if the scores are home or away, e.g. two recent home scores could replace two old away scores, or vice versa.
From what I can see on the speedwaygb website, Cook drops to 5th in the KL averages, and Klindt will be at reserve ... separated by 0.005 !!