This page explains how Joel Sommer (USATT# 96857)'s rating went from 1579 to 1621 at the Paddle Palace Club Summer Open held on 19 Aug 2017 - 19 Aug 2017. 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.