This page explains how Fredrik Persson (USATT# 218929)'s rating went from 1929 to 1933 at the GLTTC FRIDAY 730pm League event from 8 Sep 2023. 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.