This page explains how Derek Velasquez (USATT# 219831)'s rating went from 1853 to 1824 at the Austin Table Tennis League event from 6 Dec 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.