This page explains how Daniel Guttman (USATT# 20650)'s rating went from 1220 to 1190 at the The 88th New Jersey State Table Tennis Championships held on 13 May 2017 - 14 May 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.