Another self-rating question

[Raiden.Kaminari]

Originally Posted by Mark Jensen

Ok, we have slightly different views/information here. But I respect your thoughts and am coming around to your way of thinking.
It makes more sense than a (S) never affecting a (C)s dNTRP. Now, if only this mirrors the USTA's thinking, we'll all be on board.

Trust me ... this is how the DNTRP operates. It's also why (C)s can get a strike after devastating a (S) who generated a high baseline rating.

Originally Posted by Mark Jensen

This is interesting, but I have to admit, I don't understand what your saying.
Could you elaborate on the second sentence? What is the baseline rating you're talking of? Is it the players dNTRP before the match? Is it their NTRP level?
And it resets to the differential score (do you mean the (C) player's PRD? The match CRD? The RDD?)
Could you give us a hypothetical for an example?

Thanks Raiden', I appreciate your expertise.

I'll use the scores you posted for the self-rated 3.0 player. I don't know who he played against, but I can approximate. The stuff posted at http://www.shively.net/howNTRPisCalculated.pdf is pretty close to the real algorithm, although it's changed last year to include new numbers for matches between players older than 50, and players younger than 50.

(6-4, 6-1) RD .21
(6-0, 6-1) RD .325 *Above 3.20
(6-1, 6-2) RD .265 *Above 3.20
(6-4, 6-2) RD .18
(6-3, 6-1) RD .24 *Above 3.20

By the third match, at 3.0, his average baseline rating was most likely 3.11 to 3.19, depending on how low the DNTRP of his first opponent was.

The second and third match is what sent his DNTRP to above 3.10 levels.

Now, say for example, instead of playing only 3.0, he had also played 4.0 for his second match. The average baseline rating would get moved up very fast, nearly a reset, for just one match.

Anyway, what I've said is based on the DNTRP reports I've received related to self-rating grievances.

[Mark Jensen]

Thanks Raiden'
That dNTRP calculations seems to fit. Hard to tell w/out the opponent's dNTRPs.

Was I wrong to think that the 3 "non-competitive" scores were the sole reason for the strikes?
Was it indeed strictly a dNTRP calculation and hitting the threshold 3 times?
And the threshold in this case being 0.20?

I feel like I'm getting a better handle on this with your help.
I appreciate it.

[Raiden.Kaminari]

Originally Posted by Mark Jensen

Thanks Raiden'
That dNTRP calculations seems to fit. Hard to tell w/out the opponent's dNTRPs.

Was I wrong to think that the 3 "non-competitive" scores were the sole reason for the strikes?
Was it indeed strictly a dNTRP calculation and hitting the threshold 3 times?
And the threshold in this case being 0.20?

I feel like I'm getting a better handle on this with your help.
I appreciate it.

Yes, you were incorrect to assume the non-competitive scores were the sole reason for the strikes. What caused the strikes in this case was that his initial baseline rating (established by the first match). He was so high that any additional matches kept pushing him near/above the threshold of being disqualified.

[Raiden.Kaminari]

One more thing ... .20 was for last adult season. They may have adjusted it downward to .15. A few years ago, the threshold was too high at .30 ... hardly anyone got disqualified.