dynamics question

[cpicone]

Hi, I'm a newbie here and I wanted to ask if anyone noticed the following.

Three years ago USTA added the Super Senior leagues to the leagues that use calculated dynamics (that league became 55+in 2013). Since that time, 20 of the 21 local league 3.0 men that have won a match in the 7.0 league were moved up to 3.5 at year end. Only about 14% of 3.0 men that played the adult league were moved up during that time, and I see only 3 of 19 local 3.0 women that played the 7.0 55+ league were moved up.

What I think may have happened... There were no other leagues that paired a 4.0 and 3.0 guy together, so to get the dynamics calculation for them they went to the Mixed league and pulled from there. The Mixed league however is adjusted based on sex - a 4.0 guy / 3.0 woman, or 4.0 woman / 3.0 guy, produce dynamics that favor the guy over the woman. A strong 4.0 woman / 3.0 guy team usually isn't the woman carrying the guy - they have to play closer to equal, and the dynamics are adjusted to equalize them. Thus using the 4.0 guy / 3.0 guy calculations from Mixed to determine dynamics in the 55+ league would produce extra high dyanamics for the players, and actually lower dyanamics for 4.0/3.0 women. I think that would explain why all the 3.0 men playing that leagues have been moving up.

We actually had a 2.5 guy play that league to fill in. He lost every set. It was the only league he played, and USTA moved him to a 3.5 rating at year end.

Anyone seeing the same trend in their area? Maybe it is just a fluke, or is there any way to ask if the calculation is correct?

 

[schmke]

How many of the men had existing C/B ratings vs having M (mixed exclusive ratings)? And how about for the women?

If a lot had to self-rate to begin play in the Super Senior league, there is a chance that players had initial ratings defaulted and that could explain why the men congregated around the mid-point of 3.5.

 

[beernutz]

Hi, I'm a newbie here and I wanted to ask if anyone noticed the following.

Three years ago USTA added the Super Senior leagues to the leagues that use calculated dynamics (that league became 55+in 2013). Since that time, 20 of the 21 local league 3.0 men that have won a match in the 7.0 league were moved up to 3.5 at year end. Only about 14% of 3.0 men that played the adult league were moved up during that time, and I see only 3 of 19 local 3.0 women that played the 7.0 55+ league were moved up.

What I think may have happened... There were no other leagues that paired a 4.0 and 3.0 guy together, so to get the dynamics calculation for them they went to the Mixed league and pulled from there. The Mixed league however is adjusted based on sex - a 4.0 guy / 3.0 woman, or 4.0 woman / 3.0 guy, produce dynamics that favor the guy over the woman. A strong 4.0 woman / 3.0 guy team usually isn't the woman carrying the guy - they have to play closer to equal, and the dynamics are adjusted to equalize them. Thus using the 4.0 guy / 3.0 guy calculations from Mixed to determine dynamics in the 55+ league would produce extra high dyanamics for the players, and actually lower dyanamics for 4.0/3.0 women. I think that would explain why all the 3.0 men playing that leagues have been moving up.

We actually had a 2.5 guy play that league to fill in. He lost every set. It was the only league he played, and USTA moved him to a 3.5 rating at year end.

Anyone seeing the same trend in their area? Maybe it is just a fluke, or is there any way to ask if the calculation is correct?

Maybe I am misunderstanding your issue but here in the Southern section Combo league results are not used in a player's DNTRP calculation. I thought that was the case nationally but perhaps not. Which section do you play in?

 

[schmke]

Maybe I am misunderstanding your issue but here in the Southern section Combo league results are not used in a player's DNTRP calculation. I thought that was the case nationally but perhaps not. Which section do you play in?

Super Senior isn't a "Combo" league by name like the other Combo leagues you are referring to, but does use combined ratings, e.g. you have 7.0, 8.0, 9.0 flights. They do advance to Nationals though and is probably why they decided to use them for NTRP ratings.

 

[cpicone]

This is a NorCal league.

Looking at the local 20 3.0 guys that were moved up, 6 were computer rated and 14 were self-rated. None had Mixed ratings. Kind-of odd that every self-rated was moved up. One of the self-rated had a 1-4 record in the league, another had a 1-5 record. About half had winning records, half had losing records. One of my 3.0 players went 1-11 in the Mens 3.0 league, then 5-3 in Super Senior and was moved up.

Of the 3 women that moved up, 1 was self-rated and two were computer rated. Of the 17 women that didn't move up, 4 were self-rated and 14 were computer rated.

 

[schmke]

It is actually not that surprising that a bunch of self-rated players in a 7.0 league would end up with 3.5 year-end ratings. Remember, a self-rating of 3.0 means nothing as far as the rating they'll end up with goes. Being self-rated means they have no rating and their rating is calculated based on the players in the match and the score. Unless opponents are running out "6.5" teams, the opponents average 3.5 and so unless the 3.0 is playing with a pretty good 4.0, it may actually be expected that they end up with a 3.5 rating at year-end.