This page explains how SUMIT BISWAS (USATT# 220287)'s rating went from 1538 to 1580 at the Spttc Saturday Night League event from 11 Dec 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.