This page explains how Frank Lackie (USATT# 74986)'s rating went from 989 to 869 at the Paddle Palace Beaverton Super League event from 23 May 2014. 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.