This page explains how Preston Nichols (USATT# 271121)'s rating went from 839 to 824 at the 2024 TT&M's Butterfly Summer Open held on 21 Jun 2024 - 23 Jun 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.