This page explains how Richard B Larrumbide (USATT# 1165461)'s rating went from 1245 to 1272 at the 2023 San Antonio Summer Open held on 19 Aug 2023 - 19 Aug 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.