This page explains how Krishna Nandakumar (USATT# 229845)'s rating went from 677 to 641 at the Fremont Table Tennis Academy League event from 13 Sep 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.