This page explains how Luan Duang (USATT# 215833)'s rating went from 1554 to 1553 at the Austin Table Tennis League event from 15 Jan 2020. 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.