This page explains how Jim Wilson (USATT# 45685)'s rating went from 1848 to 1820 at the 2014 Southern Open on JOOLA NA Tour held on - 7 Sep 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.