This page explains how Peter Reheis (USATT# 77637)'s rating went from 1575 to 1559 at the Boston TTC Div.B event from 3 Feb 2020. 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.