This page explains how Lance Wei (USATT# 97892)'s rating went from 1321 to 1298 at the MDTTC Tuesday/Friday League event from 23 May 2017. 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.