Exhibit 4.2

SUPPLEMENTAL INDENTURE NO. 1, dated as of August 23, 2019 (this “Effective Date Supplemental Indenture”), by and among the parties that are signatories hereto as Guarantors (collectively, the “RSN Guarantors” and each a “RSN Guarantor”) and U.S. Bank National Association, as trustee (the “Trustee”).

WITNESSETH:

WHEREAS, Diamond Sports Group, LLC, a Delaware limited liability company (“Diamond Sports Group”), Diamond Sports Finance Company, a Delaware corporation (together with Diamond Sports Group, the “Issuers”, and each, an “Issuer”), Diamond Sports Intermediate Holdings LLC, a Delaware limited company and the direct parent of the Issuers (“Holdings”), the other parties that are signatories thereto as Guarantors and the Trustee has heretofore executed and delivered an indenture, dated as of August 2, 2019 (the “Initial Indenture” and, together with this Effective Date Supplemental Indenture, and as further amended, supplemented or otherwise modified, the “Indenture”) providing for the issuance of $1,825,000,000 aggregate principal amount of 6.625% Senior Notes due 2027 (the “Senior Notes”);

WHEREAS, the Initial Indenture permits the Acquisition, provided that upon the consummation of the Acquisition, the RSN Guarantors shall execute and deliver to the Trustee a supplemental indenture pursuant to which each of the RSN Guarantors shall unconditionally guarantee, on a joint and several basis, all of the Issuers’ Obligations under the Initial Indenture and the Senior Notes; and

WHEREAS, pursuant to Section 9.01 of the Initial Indenture, each of the RSN Guarantors and the Trustee is authorized to execute and deliver this Effective Date Supplemental Indenture to amend or supplement the Initial Indenture without the consent of any Holder of Senior Notes.

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, each of the RSN Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Senior Notes as follows:

(1)    Capitalized Terms. Capitalized terms used herein without definition shall have the meanings assigned to them in the Initial Indenture.

(2)    Agreement to Guarantee. Each RSN Guarantor hereby agrees to be a Guarantor under the Initial Indenture and to be bound by the terms of the Initial Indenture applicable to a Guarantor, including Article 10 thereof.

(3)    Execution and Delivery. Each RSN Guarantor agrees that the Note Guarantee shall remain in full force and effect notwithstanding the absence of the endorsement of any notation of such Note Guarantee on the Senior Notes.

(4)    Governing Law. THIS EFFECTIVE DATE SUPPLEMENTAL INDENTURE WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

(5)    Counterparts. The parties may sign any number of copies of this Effective Date Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

(6)    Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

(7)    The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Effective Date Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the RSN Guarantors.

[Signature Page Follows]

IN WITNESS WHEREOF, the parties hereto have caused this Effective Date Supplemental Indenture to be duly executed as of the date first above written.

GUARANTORS:

ARC HOLDING, LTD.

By:    Sports Holding, LLC and Fox Sports Net, LLC

FASTBALL SPORTS PRODUCTIONS, LLC
FOX SPORTS NET OHIO, LLC

By:    Fox Ohio Holdings II, LLC

FOX MOBILE HOLDINGS, LLC

FOX OHIO HOLDINGS, LLC

FOX SPORTS NET WEST 2, LLC

FOX SPORTS NET NORTH, LLC

FOX COLLEGE SPORTS, LLC

FOX SPORTS NET ARIZONA HOLDINGS, LLC

FRSM HOLDINGS LLC

FSN SAN DIEGO HOLDINGS, LLC

FS WEST HOLDINGS, LLC

FOX SPORTS NET FLORIDA, LLC

FSN SOUTHERN HOLDINGS, LLC

SUNSHINE HOLDCO, LLC

SPORTS HOLDING, LLC

By:    Fox Sports Net, LLC

FOX OHIO HOLDINGS II, LLC

By:    Fox Ohio Holdings, LLC

FOX SPORTS NET ARIZONA, LLC

By:    Fox Sports Net Arizona Holdings, LLC

FOX SPORTS NET DETROIT, LLC

By:    FRSM Holdings LLC

FOX SPORTS NET, LLC
By:    Diamond Sports Group, LLC

FOX-BRV SOUTHERN SPORTS HOLDINGS, LLC

By:    FSN Southern Holdings, LLC

SPORTSOUTH NETWORK, LLC

SPORTSOUTH NETWORK II, LLC

By:    Fox-BRV Southern Sports Holdings, LLC

FSN ST. LOUIS HOLDINGS LLC

By:    ARC Holding, Ltd.

By:    /s/ Lucy Rutishauser    Name: Lucy Rutishauser    Title: Treasurer

[Signature Page to Supplemental Indenture (Senior)]

U.S. BANK NATIONAL ASSOCIATION, as Trustee

By:    /s/ Melody M. Scott    Name: Melody M. Scott        Title: Assistant Vice President

[Signature Page to Supplemental Indenture (Senior)]