This page explains how Lanfei Chen (USATT# 197032)'s rating went from 1454 to 1500 at the SATTA League event from 19 Apr 2019. 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.