This page explains how Oishani Mukherjee (USATT# 272059)'s rating went from 439 to 438 at the Matchpoint TTC Friday League event from 10 Dec 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.