Corey Sanders has been promoted to Chief Operating Officer of MGM Resorts International, the Company announced today. "Corey's exceptional operating experience and keen knowledge of financial strategy and discipline will benefit the entire Company in this expanded role," said Jim Murren, Chairman and CEO. "Over a year ago, we promoted Corey Sanders to Chief Operating Officer of our Core Brand properties and Bill Hornbuckle to the new position of Chief Marketing Officer for our Company.