EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We Betfredconsent to the incorporation by reference in this Registration Statement on Form S-1 of our reports dated February 24, 2016, relating to betfred reviewsthe consolidated financial statements and financial statement schedule of Cliffs Natural Resources Inc. and subsidiaries, betfred sportsbook reviewand the effectiveness of Cliffs Natural Resources Inc.’s internal control over financial reporting, appearing in Betfredthe Annual Report on Form 10-K of Cliffs Natural Resources Inc. for the year ended December 31, 2015, and to the reference Betfredto us under the heading "Experts" in the prospectus, which is part of this Registration Statement.

/s/ DELOITTE & TOUCHE LLP

Cleveland, Ohio

June 16, 2016