This page explains how John Imanol Marerro (USATT# 1174844)'s rating went from 1901 to 2181 at the 2023 Butterfly Puerto Rico Teams Open held on 31 Mar 2023 - 2 Apr 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.