This page explains how Kefei Mo (USATT# 217686)'s rating went from 1551 to 1665 at the VTTC weekly league event from 7 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.