This page explains how Shanpeng Song (USATT# 88047)'s rating went from 1440 to 1589 at the Spttc Saturday Night League event from 30 Sep 2017. 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.