This page explains how Ishan Jain (USATT# 126009)'s rating went from 1890 to 1880 at the Austin Table Tennis League event from 15 Sep 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.