This page explains how Ethan Yao (USATT# 271880)'s rating went from 949 to 945 at the 2024 Fremont TTA Butterfly February Open held on 2 Feb 2024 - 4 Feb 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.