This page explains how Ryker Lawrence-vieira (USATT# 277815)'s rating went from 68 to 55 at the PTTC Saturday League event from 6 May 2023. 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.