This page explains how David H. Lee (USATT# 7630)'s rating went from 1550 to 1510 at the Long Beach Table Tennis League event from 26 Sep 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.