This page explains how Jeffrey Lin (USATT# 201774)'s rating went from 1618 to 1623 at the Butterfly January 2022 BTTC Open Tournament held on 29 Jan 2022 - 30 Jan 2022. 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.