Chess Online

Play online chess!

From	Message
saguaro 04-Aug-24, 20:00	Team Table How is the Rating in the Team Table determined? Thanks!
dynamic-dv 04-Aug-24, 21:57	Deleted by dynamic-dv on 05-Aug-24, 07:53.
pmcmurphy 05-Aug-24, 03:24	I think I understand it, but I have difficulty explaining My understanding is as follows: The team rating system uses the same Elo rating system as is used for the player ratings. But each team is treated as an individual player. Example: To begin the day on April 5, ✨💥TEAM ATTITUDE💥✨ won a game versus Cowboys and Cowgirls of the Old West. For team rating purposes, it makes no difference which players were involved. ✨💥TEAM ATTITUDE💥✨ was rated 1375 at the time the game ended; Cowboys and Cowgirls of the Old West was rated 1291 at the time the game ended. Based on the Elo formula and the 84-point difference between the teams in team rating (1375-1291=84), ✨💥TEAM ATTITUDE💥✨ gained 8 rating points for the win; Cowboys and Cowgirls of the Old West lost 8 rating points for the loss. After the postgame rating adjustments, ✨💥TEAM ATTITUDE💥✨'s new rating became 1383. The new rating for Cowboys and Cowgirls of the Old West became 1283.
pmcmurphy 05-Aug-24, 03:34	The rating adjustments for players are a separate calculation in a separate rating system In the example in the previous post, 'pzel' lost 8.7 points for his loss in the game. His rating fell from 1558 to 1549. Meanwhile, 'oscar75' gained 8.7 points for his win. His rating improved from 1602 to 1610. (The adjustment was 8.7 rating points for both players even though the rounding makes it appear otherwise. Evidently, oscar75's precise rating prior to the adjustment was something like 1601.6 rather than 1602.0.)
saguaro 05-Aug-24, 07:26	Thank You very much!
pmcmurphy 05-Aug-24, 15:41	Team Ratings Typically Reveal How a Team Has Been Doing Very Recently The current median team rating is 1274. (Absolved of Mediocrity is ranked #73 out of 145 teams on the Team Table with this rating.) Team Ladder teams typically score close to 50% in their team games, long-term. A conclusion that I eventually reached is that Team Ladder teams all have a "true" team rating that is close to the median rating (which is 1274 at the moment). However much above or below the median a Team Ladder team is at a given time is mostly due to short-term variance, I think. (My team's average team rating during 2023 was 1271. I suspect that that is fairly typical for a Team Ladder team.) During a month of 500+ games, my team's lowest rating for the month usually falls in the 1100s while my team's highest rating for the month is usually somewhere in the 1300s. Occasionally my team's rating reaches the 1400s, but it has not so far during 2024. The Press Gang has a "true" team rating much higher than 1274. It accomplishes this by scoring ~73% in its team games, long-term.
wasatch 07-Aug-24, 18:16	The Press Gang has shown strong signs of cheating in the past.
pmcmurphy 18-Aug-24, 08:52	Do Team Ratings Exist Outside of GameKnot? When I first joined GameKnot in 2006, the Team Ladder did not yet exist. The only formal team competition was the Team Table. I had difficulty at the time reaching an understanding for myself of what the team ratings measured. I have since satisfied myself that a team's rating at a given moment gives a decent indication of how well that team has been doing in its most recent team games. The team rating still strikes me as a peculiar statistic, though. Do team ratings exist outside of GameKnot? It occurs to me that GameKnot may have created the team ratings ~20 years ago as they exist on GameKnot in order to facilitate competition on the Team Table.

GameKnot: play chess online, chess clubs, monthly chess tournaments, Internet chess league, chess teams, online chess puzzles, free online chess games database and more.