This page explains how Andrew Nguyen (USATT# 93182)'s rating went from 1328 to 1273 at the OCTTA- SEPTEMBER OPEN held on 14 Sep 2019 - 14 Sep 2019. 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.