This page explains how Roel Borbon Borbon Aguanta (USATT# 268369)'s rating went from 1927 to 1971 at the 2004 Bellevue Spring Open held on - 25 Apr 2004. 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.