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: November 18, 2016

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

	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

	OAKTREE VALUE OPPORTUNITIES FUND GP LTD.

	By: Oaktree Capital Management, L.P.


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

	OCM FIE, LLC

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

	OAKTREE FUND GP I, L.P.

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

	OAKTREE CAPITAL I, L.P.

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

	OCM HOLDINGS I, LLC

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

	OAKTREE HOLDINGS, LLC

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

OAKTREE HOLDINGS, LLC 4