This page explains how Jonathan Mann (USATT# 1164157)'s rating went from 1788 to 1780 at the SPTTC MAY GIANT RR & DOUBLES TOURNAMENT held on 6 May 2023 - 7 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.