This page explains how Jacob Lee (USATT# 215212)'s rating went from 1928 to 1930 at the Matchpoint TTC Friday League event from 5 Nov 2021. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.