Exhibit 21.1 List of Subsidiaries  Name

Jurisdiction of Incorporation orOrganizationArua d.o.o. Podgorica

MontenegroKrijcos d.o.o. Bijeljina

Bosnia and HerzegovinaAbarco LLC

ArmeniaACN 066 441 067 Pty Limited

AustraliaACN 092 468 883 Pty Limited

AustraliaACN 149 603 494 Pty Limited

AustraliaAcora LLC

GeorgiaAdjaraPay LLC

GeorgiaAdvanced Systems, LLC

GeorgiaAmaya Dominicana SRL

Dominican RepublicAmaya Gaming Group (Kenya) Limited

KenyaAmaya Group SRL

Moldova, Republic ofAtlas Holdings LLC

GeorgiaAvayo Limited

United KingdomAviator LLC

GeorgiaBalkan Innovative Technology d.o.o. Beograd

SerbiaBelgard Management Limited

United KingdomBetEasy DFS Holdings Pty Limited

AustraliaBetEasy Pty Limited

AustraliaBetfair Casino Limited

MaltaBetfair Europe PLC

MaltaBetfair General Betting Limited

United KingdomBetfair Group Limited

United KingdomBetfair Holding (Malta) Ltd

MaltaBetfair Interactive US Financing LLC

United StatesBetfair Interactive US LLC

United StatesBetfair International Plc

MaltaBetfair International Spain S.A.

SpainBetfair Italia S.R.L.

ItalyBetfair Limited

United KingdomBetfair Poker Holdings Limited

MaltaBetfair Romania Development SRL

RomaniaBetfair US LLC

United StatesBIU SUB LLC

United StatesBloomlane Pty Ltd

AustraliaBonne Terre Limited

GuernseyCabarco LLC

ArmeniaCayden Limited

Isle of ManComra LLC

GeorgiaCore Gaming Limited

United KingdomCrown Nucleus d.o.o. Novi Sad

SerbiaCT Networks Limited

Isle of ManCyan Bidco Limited

United KingdomCyan Blue International Limited

Malta




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Cyan Blue Odds LT, UAB

LithuaniaCyan Blue Topco Limited

JerseyD McGranaghan Limited

United KingdomDiamond Link Limited

MaltaDraft Player Reserve LLC

United StatesDraftstars Pty Limited

AustraliaFandom Gaming, Inc.

United StatesFanDuel Canada ULC

CanadaFanDuel Deposits LLC

United StatesFanDuel Group Financing LLC

United StatesFanDuel Group Parent LLC

United StatesFanDuel Group plc

United KingdomFanDuel Group Property Holdings LLC

United StatesFanDuel Group, Inc.

United StatesFanDuel Inc.

United StatesFANDUEL INTERNATIONAL, LTD

United KingdomFanDuel Limited

United KingdomFanDuel PA LLC

United StatesFanDuel SG Deposits LLC

United StatesFanDuel SG LLC

United StatesFastball Parent 1 Inc.

United StatesFastball Parent 2 Inc.

United StatesFastball Parent 3 Limited

United KingdomFlutter Entertainment Holdings Ireland Limited

IrelandFlutter Entertainment plc

IrelandFlutter Financing BV

NetherlandsFlutter Holdings B.V.

NetherlandsFlutter Holdings US, LLC

United StatesFlutter Treasury Designated Activity Company

IrelandFlutter.com LLC

United StatesForceclub LLC

BelarusFree To Play Australia Pty Ltd

AustraliaGlobal Poker Tours Limited

Isle of ManGlobal Sports Derivatives Limited

IrelandGP Services Intermedia SA

Costa RicaHalfords Denmark Aps

DenmarkHalfords Media (IOM) Limited

Isle of ManHalfords Media (Italy) SRL

ItalyHalfords Media (UK) Limited

United KingdomHalfords Media Spain SL

SpainHestview Limited

United KingdomHRTV HOLDCO LLC

United StatesHRTV LLC

United StatesIASBet.com Pty Ltd

AustraliaiBus Media (Malta) Ltd

MaltaiBus Media Limited

Isle of ManInsightmarket Limited

United KingdomInteractive Payments Inc.

Canada




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International All Sports Limited

AustraliaJunglee Games India Private Limited

IndiaJunglee Games, Inc.

United StatesK. OR Enterprises Unlimited Company

IrelandKeiem Limited

MaltaLabranza Limited

CyprusLinicom Limited

MaltaLinicom Subco Limited

IsraelLondon Multi-asset Exchange (Holdings) Limited

United KingdomLUDENS ONLINE GAMING PRIVATE LIMITED

IndiaMaks Bet dooel Skopje

North Macedonia, Republic ofMax Bet d.o.o. Novi Sad

SerbiaMediaplay Ltd

United KingdomMotamashe LLC

GeorgiaNaris Limited

Isle of ManNumberFire, Inc.

United StatesODS Holding LLC

United StatesODS Properties, Inc.

United StatesODS Technologies L.P.

United StatesPaddy Power (Northern Ireland) Limited

United KingdomPaddy Power Australia Pty Ltd

AustraliaPaddy Power Betfair Limited

IrelandPaddy Power Entertainment Limited

Isle of ManPaddy Power Financials Limited

IrelandPaddy Power Holdings Limited

Isle of ManPaddy Power Isle of Man Limited

Isle of ManPaddy Power Luxembourg S.a.r.l.

LuxembourgPaddy Power Online Limited

Isle of ManPaddy Power Risk Management Services Limited

Isle of ManPaddy Power Services Limited

GuernseyPlay Dibz Limited

IrelandPolco Limited

MaltaPower Leisure Bookmakers Limited

United KingdomPPB Counterparty Services Limited

MaltaPPB Developments and Insights Limited

IrelandPPB Entertainment Limited

MaltaPPB Financing Unlimited Company

IrelandPPB Games Limited

MaltaPPB GE Limited

IrelandPPB Treasury Unlimited Company

IrelandPridepark Developments Limited

IrelandPublipoker SRL

ItalyPYR Software Limited

CanadaRational Entertainment Enterprises Limited

Isle of ManRational Entertainment Ventures Limited

Isle of ManRational FT Enterprises (Malta) Limited

MaltaRational FT Enterprises Limited

Isle of ManRational FT Holdings Limited

Isle of Man




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Rational Intellectual Holdings Limited

Isle of ManRational Live Events (Malta) Limited

MaltaRational Networks Limited

MaltaRational Poker School Limited

Isle of ManRational Resources Limited

MaltaRational Services (India) LLP

IndiaREEL Denmark Limited

Isle of ManREEL Estonia Limited

Isle of ManREEL Europe Limited

MaltaREEL Germany Limited

MaltaREEL Italy Limited

MaltaREEL Malta Ltd

MaltaRG Cash Plus Limited

Isle of ManS.D.M. International d.o.o. Beograd  Novi Beograd

SerbiaSachiko Gaming Private Limited

IndiaSBA Services Pty Limited

AustraliaShowdown Sports, Inc.

United StatesSilvercenturion Techsolutions Private Limited

IndiaSINGULAR GROUP DOOEL Skopje

North Macedonia, Republic ofSingular Group, LLC

GeorgiaSingular Holding Limited

MaltaSingular Trading Limited

MaltaSisal Albania SHPK

AlbaniaSisal Gaming S.r.l.

ItalySisal Germany GmbH

GermanySISAL ITALIA S.P.A

ItalySisal Jeux Maroc S.a.s

MoroccoSisal Juego Espana S.A.

SpainSisal Lotérie Maroc S.a.r.l.

MoroccoSisal S.p.A.

ItalySisal Şans İnteraktif Hizmetler ve Şans Oyunları Yatırımları A.Ş.

TurkeySisal Technology South Africa (PTY) Ltd

South AfricaSisal Technology Tunisia Societe a Responsabilite Limitee

TunisiaSisal Technology Yazılım Anonim Şirketi

TurkeySISALŞANS DİJİTAL VE ELEKTRONİK ŞANS OYUNLARI VE YAYINCILIK
ANONİM ŞİRKETİ

TurkeySportingBet Australia Holdings Pty Limited

AustraliaSportsbet Pty Ltd

AustraliaStars Fantasy Sports Holdco, LLC

United StatesStars Fantasy Sports Subco, LLC

United StatesStars Fantasy Sports, LLC

United StatesStars Group (Canada) Inc.

CanadaStars Group (US) Co-Borrower, LLC

United StatesStars Group (US) Holdings, LLC

United StatesStars Group Holdings (UK) Limited

United KingdomStars Group Holdings BV

NetherlandsStars Group Holdings Canada Inc

CanadaStars Group Holdings Cooperative U.A

Netherlands




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Stars Group Services Canada Inc

CanadaStars Group Services USA Corporation

United StatesStars Group UK1 Limited

United KingdomStars Group UK2 Limited

United KingdomStars Interactive Asia (Malta) Limited

MaltaStars Interactive Holdings (IOM) Limited

Isle of ManStars Interactive Intellectual (AUS) Holdings Pty Limited

AustraliaStars Interactive Israel Ltd

IsraelStars Interactive Limited

Isle of ManStars Interactive NJ (IR) Services Limited

IrelandStars Interactive PS Holdings Limited

Isle of ManStars Interactive Services (Bulgaria) EOOD

BulgariaStars Interactive Services (Israel) Ltd

IsraelStars Mobile Limited

Isle of ManStars Play Mobile Ireland Limited

IrelandStarStreet LLC

United StatesThe iTech Resource Group LLC

United StatesThe Rebate Company, LLC

United StatesThe Sporting Exchange (Clients) Limited

United KingdomThe Sporting Exchange Limited

United KingdomThe Stars Group Inc.

CanadaTimeform Limited

United KingdomTombola (Canada) Limited

CanadaTombola (International) plc

GibraltarTombola International Malta Plc

MaltaTombola Italy S.r.l

ItalyTombola Limited

United KingdomTombola Services B.V.

NetherlandsTombola Services Denmark ApS

DenmarkTombola Services Germany GmbH

GermanyTombola Services SL

SpainTrackside Live Productions, LLC

United StatesTradefair Spreads Limited

United KingdomTrinitech EOOD

BulgariaTSE (International) Limited

United KingdomTSE Data Processing Limited

IrelandTSE Development Limited

United KingdomTSE Global Limited

United KingdomTSE Holdings Limited

United KingdomTSE Malta LP

GibraltarTSE Services Limited

GibraltarTSE US LLC

United StatesTSED Unipessoal LDA

PortugalTSG Atlantic Limited

Isle of ManTSG Australia Holdings Pty Ltd

AustraliaTSG Australia Pty Limited

AustraliaTSG Australia Wagering Pty Limited

AustraliaTSG Interactive (Malta) Limited

Malta




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TSG Interactive Canada Inc.

CanadaTSG Interactive Canada Ltd

MaltaTSG Interactive Gaming Europe Limited

MaltaTSG Interactive Plc

MaltaTSG Interactive Services (Ireland) Limited

IrelandTSG Interactive Services Limited

Isle of ManTSG Interactive Spain S.A.

SpainTSG Interactive US Services Limited

United StatesTSG Italy SRL

ItalyTSG N.T. Pty Limited

AustraliaTSG Platforms (Ireland) Limited

IrelandTSG Services Israel Ltd

IsraelTSGA Holdco Pty Limited

AustraliaTSGA Pty Limited

AustraliaTSS Sweden AB

SwedenUnited Channel Media Limited

MaltaWilliam Hill Victoria LP

AustraliaWinslow Four

Cayman IslandsWinslow One Limited

United KingdomWinslow Three Limited

Cayman IslandsWinslow Two

United KingdomWorldwide Independent Trust Limited

Isle of Man