This page explains how Mingyan Zhang (USATT# 219649)'s rating went from 1576 to 1678 at the Spttc Saturday Night League event from 2 Oct 2021. 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.