This page explains how David T Campbell (USATT# 59573)'s rating went from 1266 to 1247 at the HCTT Tuesday Night League event from 7 Jun 2016. 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.