This page explains how Umar Iqbal (USATT# 222486)'s rating went from 90 to 79 at the Fremont Table Tennis Academy League event from 25 Mar 2018. 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.