EXHIBIT 99.1

This Statement on Form 4 is filed jointly by the Reporting Persons listed below. The principal business address of each of these Reporting Persons is 333 South Grand Avenue, 28th Fl., Los Angeles, CA 90071.

Name of Designated Filer: OAKTREE VALUE OPPORTUNITIES FUND HOLDINGS, L.P.

Date of Event Requiring Statement: December 10, 2015

Issuer Name and Ticker or Trading Symbol: XCO

	OAKTREE VALUE OPPORTUNITIES FUND HOLDINGS, L.P.

	By: Oaktree Value Opportunities Fund GP, L.P.,
	Its: General Partner

	By: Oaktree Value Opportunities Fund GP Ltd.,
	Its: General Partner

	By: Oaktree Capital Management, L.P.
	Its: Director

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

	OAKTREE VALUE OPPORTUNITIES FUND GP, L.P.

	By: Oaktree Value Opportunities Fund GP Ltd., Its: General Partner

	By: Oaktree Capital Management, L.P.
	Its: Director

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

	OAKTREE VALUE OPPORTUNITIES FUND GP LTD.

	By: Oaktree Capital Management, L.P.


	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

	OCM FIE, LLC

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Authorized Signatory

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Authorized Signatory

	OAKTREE FUND GP I, L.P.

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Authorized Signatory

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Authorized Signatory

	OAKTREE CAPITAL I, L.P.

	By: OCM Holdings I, LLC Its: General Partner

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

	OCM HOLDINGS I, LLC

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

	OAKTREE HOLDINGS, LLC

	By: Oaktree Capital Group, LLC Its: Managing Member

	By:	/s/ Jamie Toothman
	Name:	Jamie Toothman
	Title:	Vice President

	By:	/s/ Lisa Arakaki
	Name:	Lisa Arakaki
	Title:	Managing Director

OAKTREE HOLDINGS, LLC 4