The computer has nothing to do with wins and loses. It goes by individual set scores. So if John was computer rated to start the season while the others were self rated, the self rated take less to get bumped. If John only won at a rate of 6-3 or closer against the other two players and also like that against other players in the 4.0 level or lower he would not get bumped. However, if John was very close to the bump threshold and he only beat these guys 6-4 or closer or actually lost a set to them 6-0/6-1/6-2 and the other set was close and won in a tiebreak, the other player would actually go into the computer with the higher rating and could get a strike even though they lost the match.
See, winning the match does not make any difference, it is the set score. If I beat someone that has a higher computer rating (remember, you only see the rounded number) 7-5, 0-6, 1-0, the computer sees that as a tie and a loss, therefore my rating would not go up that much or could actually go down if the player was rated below me. While I won the match, I only won 7 games in the two sets while the other player won 11. You have to look at the sets that way and not who won the match. I think this is one of the issues that gets people confused. The sets produce the change in the computer the most, not who won the match.
Also, here in the southern section mixed, combo, and NTRP don't even factor into the equation. Former teaching pro means nothing as there are many that could fall down to 4.0 if they played enough matches and had bad sets. I could theoretically be a 4.0 player, play 4.5 and win every match but not get bumped. Win 7-5, 0-6, 1-0 and it be against players just barely at 4.5 and a few 4.0 players thrown in.
