This page explains how Grant Bergmann (USATT# 31319)'s rating went from 1411 to 1361 at the 2021 US National Table Tennis Championships held on 4 Jul 2021 - 9 Jul 2021. 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.