This page explains how Qi Cai (USATT# 223588)'s rating went from 1560 to 1578 at the Spttc Saturday Night League event from 25 Jan 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.