This page explains how Sayan Dey (USATT# 198752)'s rating went from 1975 to 1925 at the 2022 FREMONT BUTTERFLY FEBRUARY OPEN held on 11 Feb 2022 - 13 Feb 2022. 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.