This page explains how Phuwanat Wisutthawanich (USATT# 1182987)'s rating went from n/a to 1580 at the Carmel Barrau International Tournament held on 15 Dec 2023 - 17 Dec 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.