This page explains how Jinbao Ma (USATT# 220283)'s rating went from 2679 to 2688 at the ICC JOOLA Spring Open 2020 held on 7 Mar 2020 - 8 Mar 2020. 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.