Exhibit 99.A

EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Units, representing limited partner interests of Teekay Offshore Partners L.P. dated as of July 11, 2016 is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the previsions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Date:   July 11, 2016	MTP ENERGY FUND LTD
	By: MTP Energy Management LLC, its Investment Manager
	By:	/s/ Alec N. Litowitz
	Name:  Alec N. Litowitz
	Title:    Manager of Supernova Management LLC, the General Partner of Magnetar Capital Partners LP, Sole Member of Magnetar Financial LLC, Sole Member of MTP Energy Management LLC
Date:   July 11, 2016	MTP ENERGY MANAGEMENT LLC
	By: Magnetar Financial LLC, its Sole Member
	By:	/s/ Alec N. Litowitz
	Name:  Alec N. Litowitz
	Title:    Manager of Supernova Management LLC, the General Partner of Magnetar Capital Partners LP, Sole Member of Magnetar Financial LLC
Date:   July 11, 2016	MAGNETAR FINANCIAL LLC
	By: Magnetar Capital Partners LP, its Sole Member
	By:	/s/ Alec N. Litowitz
	Name:  Alec N. Litowitz
	Title:    Manager of Supernova Management LLC, the General Partner of Magnetar Capital Partners LP

Date:   July 11, 2016	MAGNETAR CAPITAL PARTNERS LP
	By: Supernova Management LLC, its General Partner
	By:	/s/ Alec N. Litowitz
	Name:  Alec N. Litowitz
	Title:    Manager of Supernova Management LLC
Date:   July 11, 2016	SUPERNOVA MANAGEMENT LLC
	By:	/s/ Alec N. Litowitz
	Name:  Alec N. Litowitz
	Title:    Manager
Date:   July 11, 2016	/s/ Alec N. Litowitz
	Alec N. Litowitz