This page explains how Tom Lackaff (USATT# 4387)'s rating went from 1888 to 1892 at the NJTTC Thursday Adv League event from 30 Nov 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.