This page explains how Mark Tomlin (USATT# 927032)'s rating went from 1530 to 1516 at the BTTC League event from 18 Jul 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.