This page explains how Tiffany Lam (USATT# 96513)'s rating went from 498 to 487 at the PTTC Saturday League event from 19 Mar 2016. 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.