This page explains how Dat Nguyen (USATT# 76313)'s rating went from 1902 to 1889 at the Austin Table Tennis League event from 21 Feb 2018. 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.