This page explains how Stan Smith (USATT# 19864)'s rating went from 1318 to 1223 at the 2019 Luke White Memorial Winter Singles League event from 18 Mar 2019. 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.