This page explains how Sumin Lee (USATT# 91475)'s rating went from 1284 to 1290 at the 2014 HI February Open held on - 16 Feb 2014. 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.