This page explains how Martin Lessa (USATT# 266548)'s rating went from 1005 to 1001 at the Central Carolinas Super League event from 11 Dec 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.