This page explains how Bavly Shehata (USATT# 215980)'s rating went from 1673 to 1578 at the Boston TTC Div.B event from 1 May 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.