Taken from BBC news today....
O'Sullivan blamed his decision on a "bad day in the office".
"I wish I could have given Stephen a better game and I'm sorry I didn't stick around to sharpen him up for his semi-final," he added.
"I'm also really sorry to let down the fans who came to see me play - it wasn't my intention to disappoint them and for that I am truly apologetic.
"At this moment I am feeling disappointed with myself and I am hurt and numb.
"But I am a fighter and I will be back on my feet fighting stronger and harder than ever very soon."