This page explains how Olaf Westheider (USATT# 276615)'s rating went from 1181 to 1200 at the San Antonio Butterfly Pre Summer Open held on 25 May 2024 - 25 May 2024. 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.