This page explains how Kian I Avilla (USATT# 96791)'s rating went from 870 to 849 at the Long Island's Woodbury Table Tennis League event from 7 Sep 2015. 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.