This page explains how Brian Walt (USATT# 84362)'s rating went from 1293 to 1297 at the Boston TTC Div.B event from 7 Jan 2019. 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.