Underdog Lawsuits: Litigation Tracker

Summary

Underdog is a party to 8 cases of the 74 on this tracker, involving 7 states.

Pending (8)

• Connecticut cease-and-desist orders to nine platforms (September 2026)

  Orders issued; first platform suit filedConnecticut Department of Consumer Protection — administrativeCT

  Connecticut ordered nine more platforms to stop offering sports event contracts (September 10, 2026) and issued about thirty subpoenas to vendors, app stores and media organizations.Checked Sep 22, 2026

• Missouri Attorney General cease-and-desist letters (September 2026)

  Pre-suit letters; response window runningMissouri Attorney General — pre-suit letters (no court proceeding)MO

  Missouri’s Attorney General told six platforms to stop offering sports event contracts or get licensed and taxed as sportsbooks (letters dated September 16, 2026).Checked Sep 22, 2026

• Underdog Exchange DCM Inc. v. Brown

  No. 2:26-cv-03200

  Filed; no rulingW.D. Wash. (Judge Zilly)WA

  Underdog sued WA officials (September 8, 2026) for a declaration that federal law preempts state enforcement against its sports event contracts.Checked Sep 22, 2026

• Underdog Exchange DCM, Inc. v. Campbell

  No. 1:26-cv-14098

  Filed; no rulingD. Mass. (Judge Saylor)MA

  Underdog sued MA officials (September 8, 2026) for a declaration that federal law preempts state enforcement against its sports event contracts.Checked Sep 22, 2026

• Underdog Exchange DCM, Inc. v. Kaul

  No. 3:26-cv-00858

  Filed; no rulingW.D. Wis. (Judge Conley)WI

  Underdog sued WI officials (September 8, 2026) for a declaration that federal law preempts state enforcement against its sports event contracts.Checked Sep 22, 2026

• Underdog Exchange DCM, Inc. v. Tong

  No. 3:26-cv-01499

  Filed; no rulingD. Conn. (Judge Underhill)CT

  Underdog sued Connecticut’s Attorney General and consumer-protection regulators (September 15, 2026) days after receiving one of the state’s new cease-and-desist orders.Checked Sep 22, 2026

• Underdog Exchange DCM, Inc. v. Torrez

  No. 1:26-cv-02935

  Filed; no rulingD.N.M. (Judge Robbenhaar)NM

  Underdog sued NM officials (September 8, 2026) for a declaration that federal law preempts state enforcement against its sports event contracts.Checked Sep 22, 2026

• Underdog Exchange DCM, Inc. v. Wilson

  No. 1:26-cv-02169

  Filed; no rulingN.D. Ohio (Judge Nugent)OH

  Underdog sued OH officials (September 8, 2026) for a declaration that federal law preempts state enforcement against its sports event contracts.Checked Sep 22, 2026

What Changed

Logged September 22, 2026

• New caseSeptember 16, 2026

  Missouri Attorney General cease-and-desist letters (September 2026)

  Missouri’s Attorney General told Kalshi, Polymarket, Crypto.com, Novig, Underdog and Robinhood to stop offering sports event contracts or be licensed and taxed as sportsbooks. No suit has been filed by either side.

  Missouri AG — letter to Kalshi

• New caseSeptember 15, 2026

  Underdog Exchange DCM, Inc. v. Tong

  Underdog became the first platform to sue over Connecticut’s September 10 cease-and-desist orders, seeking a declaration that federal law preempts the state’s gambling law.

  CourtListener — 3:26-cv-01499

• New caseSeptember 10, 2026

  Connecticut cease-and-desist orders to nine platforms (September 2026)

  Connecticut ordered nine more platforms — Polymarket, Coinbase, Crypto.com, Robinhood, ProphetX, Novig, Webull, Gemini and Underdog — to stop offering sports event contracts, and subpoenaed about thirty vendors, app stores and media organizations.

  Governor of Connecticut — announcement

• New caseSeptember 8, 2026

  Underdog Exchange DCM, Inc. v. Campbell

  Underdog Exchange DCM sued MA officials to bar enforcement against its sports event contracts — one of six Underdog preemption suits filed in a week.

  CourtListener — Underdog Exchange DCM, Inc. v. Campbell

• New caseSeptember 8, 2026

  Underdog Exchange DCM, Inc. v. Wilson

  Underdog Exchange DCM sued OH officials to bar enforcement against its sports event contracts — one of six Underdog preemption suits filed in a week.

  CourtListener — Underdog Exchange DCM, Inc. v. Wilson

• New caseSeptember 8, 2026

  Underdog Exchange DCM, Inc. v. Kaul

  Underdog Exchange DCM sued WI officials to bar enforcement against its sports event contracts — one of six Underdog preemption suits filed in a week.

  CourtListener — Underdog Exchange DCM, Inc. v. Kaul