This page explains how Joel Hallan (USATT# 59429)'s rating went from 1412 to 1493 at the Waco Spring Round Robin Tourna held on - 21 May 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.