This page explains how Joel L. Lipschutz (USATT# 7800)'s rating went from 1189 to 1190 at the Lily Yip TT Center July Open held on - 10 Jul 2011. 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.