idk, maybe they could not play that game
One player gifted me 20 rapid rating points!


I created a 15|10 challenge, and a player named KnightDrag resigned after the first move, and then requested a few rematches, gifting me about 4 wins. I was totally confused why they would do this, because it cost them rapid points.
Sandbagging. One of my opponents did this to me. Except I gained 200 points. I made a forum about this, and my rating got reset to 1000. Yours will too

I know exactly why. All you have to do is to look at the chess.com article on sandbagging. He wanted to drop his points so low, that he would meet the lowest rated players on chess.com, and possibly play a tournament for a membership or something.

There's another possible explanation for this mysterious phenomenon. Your opponent was YOU and you were farming your alternate account to give yourself free rating...

If that was true, my account would likely be closed for abuse. It's in the Community Guidelines
Not unless somebody reports you...

******** @Chess4PK reports you *********
I haven't reported him yet because I have no sufficient evidence that he committed this action of fair play abuse. But I am throwing out the possibility of him farming himself as it has others have done so before and it is not so unlikely.
I created a 15|10 challenge, and a player named KnightDrag resigned after the first move, and then requested a few rematches, gifting me about 4 wins. I was totally confused why they would do this, because it cost them rapid points.