This page explains how Sofia Xerri (USATT# 222614)'s rating went from 1052 to 1038 at the BTTC League event from 30 May 2023. 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.