This page explains how Tung D. D. Phan (USATT# 9070)'s rating went from 2111 to 2109 at the OCTTA BUTTERFLY OPEN SUNDAY MARCH 10, 2024 held on 10 Mar 2024 - 10 Mar 2024. 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.