This page explains how Aditya Singla (USATT# 230779)'s rating went from 148 to 133 at the ICC - Sunday Beginners League event from 23 Dec 2018. 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.