This page explains how Wilson Wei (USATT# 73216)'s rating went from 2252 to 2251 at the NYISC New York Indoor Sports Club Friday Nights event from 20 May 2017. 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.