This page explains how William Lin (USATT# 48960)'s rating went from 2146 to 2155 at the 2018 Butterfly WDCTT December Open held on 8 Dec 2018 - 9 Dec 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.