This page explains how William Huang (USATT# 279401)'s rating went from 2144 to 2138 at the 2018 Butterfly WDCTT May Open held on 26 May 2018 - 27 May 2018. 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.