I suggested that the arena likely had become the responsibility of multiple people, including Assistant General Manager Raul Gutierrez, and Steve Rosebrook, VP, Operations.
Actually, Rosebrook was soon officially promoted.
This is late, but here's an 11/7/13 press release from AEG Worldwide, Steve Rosebrook Appointed General Manager of Barclays Center:
STEVE ROSEBROOK APPOINTED AS GENERAL MANAGER FOR BROOKLYN’S BARCLAYS CENTER
BROOKLYN, NY & LOS ANGELES, CA (November 7, 2013) Steve Rosebrook has been appointed General Manager of Barclays Center in Brooklyn, New York, it was announced today by Bob Newman, President, AEG Facilities, the leading sports and entertainment venue operator in the world. Rosebrook will be responsible for the management of the front and back of house operations of the venue operated by AEG Facilities and Barclays Center’s staff.
Having joined the organization more than a year prior to the opening as the arena’s Vice President of Operations, Rosebrook will continue to activate and oversee several initiatives AEG has created for the venue industry including AEG S.A.F.E., AEG 1Source, AEG 1EARTH, AEG 1Force, AEG Encore and AEG Energy Services, in addition to working closely with other divisions of the company.
“Steve is a great leader whose venue experience will help Barclays Center continue to thrive as one of the busiest and most successful arenas in the world,” said Newman. “As part of the arena’s opening team, we look forward to Steve’s continued success of providing the best experience for the guests that come through the doors at Barclays Center.”
With more than 24 years of experience in the facility management industry, Rosebrook has recently held positions as the Assistant General Manager and Regional Director of Operations for AEG Facilities at the XL Center in Hartford, Connecticut; Assistant General Manager of Toyota Center in Houston, Texas and Facility Service Manager of the Air Canada Centre in Toronto, Canada.
Rosebrook graduated from the University of Toronto and is a member of the International Association of Venue Managers.