Boxingtalk.com has been informed that HBO has pulled it's October 7 PPV date, which Top Rank Inc had on hold for an Antonio Margarito fight. We understand that HBO pulled the date so Don King Productions can stage a heavyweight championship doubleheader featuring Sergei Liakhovich and Nikolay Valuev in seperate title defenses. Liakhovich is expected to face Mike Tyson conqueror Kevin McBride while Valuev will face former title challenger Monte "Two Gunz" Barrett. Madison Square Garden appears to be the frontrunner to host the event as this goes to print. Remember where you heard it first! 9:28 PM EST