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U.S. Senator Blumenthal Sends Letters to Sports Leagues on Gambling and Prediction Markets

U.S. Senator Richard Blumenthal sent letters to commissioners of six major sports leagues on Thursday, requesting information on partnerships with sportsbooks and prediction markets. The letters address safeguards for sporting integrity, gambling addiction prevention, and athlete protection. Blumenthal also raised questions about compliance with state gambling regulations.

Espn
1 source·Apr 10, 4:15 PM(25 days ago)·2m read
U.S. Senator Blumenthal Sends Letters to Sports Leagues on Gambling and Prediction MarketsEspn
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Officials sent letters to commissioners of major sports leagues on Thursday, requesting information on partnerships with sportsbooks and prediction markets. The letters address safeguards for sporting integrity, gambling addiction prevention, and athlete protection. Questions were raised about compliance with state gambling regulations.

A senator sent letters on Thursday to the commissioners of major sports leagues. The letters request details on the leagues' partnerships with sportsbooks and prediction markets.

Information was requested by May 1 on how the leagues safeguard sporting integrity, prevent gambling addiction, and protect athletes from abuse. In the letters, it was noted that a federal ban on sports gambling, which the leagues had supported, was overturned eight years ago. Gambling has since expanded into various aspects of sports.

The letters highlight concerns about addiction, threats to players, and potential corruption in games. The role of prediction markets, where users trade on yes/no outcomes of events including sports, was addressed. A list of all partnerships with sportsbooks and prediction markets, data shared between them, and restrictions on wager types was requested.

One league lacks a commercial sportsbook partnership but has a data-sharing agreement with licensed sportsbooks.

Some leagues signed partnerships with prediction markets recently.

Leagues have expressed concerns about safeguards in prediction markets. Some leagues declined to comment on the letters, while others referred to previous communications. Media outlets have contacted leagues for comment.

The letters also cover regulation of prediction markets, which face legal disputes. States have sued to block prediction markets for attempting to circumvent state gambling regulations. The leagues were asked how they ensure partnerships do not violate state laws.

market companies argue they fall under the Commodity Futures Trading Commission (CFTC) jurisdiction, not state regulators.

Regulatory bodies have taken actions regarding jurisdiction over prediction markets.

The expansion of gambling and prediction markets follows the 2018 Supreme Court decision overturning the federal ban. Leagues have formed various partnerships, raising questions about integrity and regulation.

Responses from the leagues could influence future oversight and partnerships.

Key Facts

Six leagues
Received letters from Senator Blumenthal on gambling partnerships
May 1 deadline
For leagues to provide information on safeguards and data sharing
NCAA exception
No commercial sportsbook partnership but has data agreement
Three recent partnerships
MLS, NHL, MLB with prediction markets in last six months
CFTC actions
Sued states and claimed exclusive jurisdiction over prediction markets

Story Timeline

5 events
  1. Thursday

    Senator Blumenthal sent letters to six sports league commissioners requesting information on gambling partnerships.

    1 sourceEspn
  2. This week

    Federal appeals court sided with Kalshi against New Jersey gaming regulators.

    1 sourceEspn
  3. Last week

    CFTC sued three states, including Connecticut, over prediction market regulations.

    1 sourceEspn
  4. Last month

    Blumenthal introduced legislation to regulate prediction markets; NFL sent letter to prediction companies.

    1 sourceEspn
  5. Last year

    NCAA signed data-sharing agreement with licensed sportsbooks.

    1 sourceEspn

Potential Impact

  1. 01

    Sports integrity policies could be strengthened in response to the requests.

  2. 02

    Prediction market companies face ongoing legal challenges from states and CFTC.

  3. 03

    Leagues may disclose partnership details, leading to increased regulatory scrutiny.

  4. 04

    Athlete protection measures could be reviewed across major sports leagues.

  5. 05

    Blumenthal's legislation may advance restrictions on prediction market trading.

Transparency Panel

Sources cross-referenced1
Framing risk55/100 (high)
Confidence score70%
Synthesized bySubstrate AI
Word count337 words
PublishedApr 10, 2026, 4:15 PM
Bias signals removed4 across 2 outlets
Signal Breakdown
Loaded 1Framing 1Amplifying 1Editorializing 1

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