This page explains how Nelson Yamada (USATT# 269784)'s rating went from 1551 to 1528 at the AZ PTTC Monday event from 2 May 2022. 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.