This page explains how Simeon Duran (USATT# 5507)'s rating went from 1218 to 1219 at the 1994 Texas Open held on - 19 Jun 1994. 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.