This page explains how Mark Vrabel (USATT# 10855)'s rating went from 2016 to 1946 at the 2010 PA State Championships (Closed) held on - 11 Apr 2010. 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.