“I ended up running the numbers to compare a team’s ODI batting performance from 2006 to 2009, with its batting performance in Twenty20 matches over the same period.”

I also used only data from the first innings for both matches (because obviously second innings would throw off the average), discarding any rain-shortened matches. However, I didn’t worry about the fact that the T20 players for a country could be different than the ODI players. I also didn’t account for where the matches were played (ie, the Indian team plays more matches in India, which typically has better batting pitches).

I’d be happy to share the dataset I used if you want.

That is one interesting comparison you have made, and I must add that is quite indigenious of you.

I agree with your second reasoning, and while there is no flaw with the first, I believe that statistics have a way of readjusting a sudden burst over a long period. Of course, I could be wrong.

However, there is one doubt that creeps in my mind. The ODI average that you have taken, is it for the entire duration of the existence of ODI’s? I believe this is the case, as an intuition. I believe you could have a more conclusive statistical comparison here, if you were to take the ODI average for the same years, in which T20 cricket has been played. (If that is not the case already!)

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But then again, maybe chasing huge scores due to a terrible bowling performance takes the toll on the batting.

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[...] to judge what the 20-over equivalent of a particular 50-over score is.  The magic number is 58.6% (see this post for more info on D-L).  That is, in a T20 innings, a team has 58.6% of the resources it has in a 50-over innings.  [...]

For example, if Team 1 bats 20 overs, and because of rain, Team 2 is set a D/L target to chase in 7 overs, then the NRR for both teams will be computed with only 7 overs. This will reduce the impact that match has on the overall net run rate, because the NRR for other matches will be computed with the full 20 overs, and thus have greater weight in the overall NRR calculation.

As for the second question, I don’t know either, but my guess is also no.

How does D/L affect the NRR workings? Is it still the actual batting runrate minus the actual bowling runrate or there is some play involved with the percentage of resources used / lost?

And secondly, I also wanted to know this: if a match is won in the Super Over, is it included towards computation of NRR? I guess that the answer to this question would be ‘no’.

Thanks. Bye.