This page explains how Willy Leparulo (USATT# 13012)'s rating went from 1933 to 1923 at the Pensacola's 13th Annual Winter Open held on - 19 Jan 2013. 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.