This page explains how Doytcho Doytchev (USATT# 92501)'s rating went from 1654 to 1604 at the HI Friday event from 3 Aug 2015. 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.