This page explains how Mark Tomlin (USATT# 927032)'s rating went from 1495 to 1487 at the BTTC League event from 12 Oct 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.