This page explains how Rey Sotero (USATT# 76208)'s rating went from 1920 to 1843 at the Potomac 2013 Spring Open held on - 21 Apr 2013. 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.