I was under the impression that, under Glicko, the rating adjustment for losing to a provisionally-rated player with high RD was different than that for losing to a non-provisional player with low RD.
This ten-year-old thread suggests the same, with @Martin_Stahl saying: "A 1200 rated player with a low RD will impact your rating differently than a 1200 rated player with a high RD (such as an [unrated] player)"
However, that doesn't seem to be the case.
I recently played a rapid 15|10 game with someone who was rated 1173 prior to our game. They won, and, after the game, their rating increased to 1294 (a gain of 121 points). Looking at their profile, our game was their third game on the site. After 5 games total, their rating now sits at 1370.
Despite them quite obviously having had a high Glicko RD when we played, the rating adjustment shown in chat before our game looked like this:
Xanitrep (1272) vs. [Redacted] (1173) (15 | 10)
win +6 / draw -2 / lose -10
and, when I lost the game, I did indeed lose the 10 points that I'd be expected to lose for losing against a "real" 1173 with a stable rating rather than the lesser amount that I'd lose for losing against the 1370+ that they evidently are in reality.
Am I wrong about the expected behavior here under Glicko when facing a high RD opponent (i.e., that the rating adjustment after a game should be a function of the opponent's RD and not just one's own RD)?
That's how I understood it too. Site CEO Erik described it that way in an article about ratings- https://www.chess.com/article/view/chess-ratings---how-they-work
I was under the impression that, under Glicko, the rating adjustment for losing to a provisionally-rated player with high RD was different than that for losing to a non-provisional player with low RD.
This ten-year-old thread suggests the same, with @Martin_Stahl saying: "A 1200 rated player with a low RD will impact your rating differently than a 1200 rated player with a high RD (such as an [unrated] player)"
However, that doesn't seem to be the case.
I recently played a rapid 15|10 game with someone who was rated 1173 prior to our game. They won, and, after the game, their rating increased to 1294 (a gain of 121 points). Looking at their profile, our game was their third game on the site. After 5 games total, their rating now sits at 1370.
Despite them quite obviously having had a high Glicko RD when we played, the rating adjustment shown in chat before our game looked like this:
Xanitrep (1272) vs. [Redacted] (1173) (15 | 10)
win +6 / draw -2 / lose -10
and, when I lost the game, I did indeed lose the 10 points that I'd be expected to lose for losing against a "real" 1173 with a stable rating rather than the lesser amount that I'd lose for losing against the 1370+ that they evidently are in reality.
Am I wrong about the expected behavior here under Glicko when facing a high RD opponent (i.e., that the rating adjustment after a game should be a function of the opponent's RD and not just one's own RD)?