This page explains how Jay Nelson (USATT# 12141)'s rating went from 1238 to 1246 at the Butterfly Spin &Smash February Open held on 4 Feb 2023 - 5 Feb 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.