This page explains how Xinlei Zhang (USATT# 273164)'s rating went from 1390 to 1351 at the 888 Summer League event from 17 Apr 2022. The links below take you to pages that describe various aspects of the ratings processor.

The ratings 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.