Middlesbrough are demanding Southampton be removed from the Championship play-off final following allegations that a Saints staff member secretly filmed their training session ahead of the semi-final clash.
The Teesside club issued a strongly-worded statement this afternoon calling for their rivals' expulsion from the competition after the EFL charged Southampton last Friday.
The incident allegedly occurred at Middlesbrough's Rockliffe Park training complex, where a Southampton analyst was reportedly spotted observing from a public area overlooking the facility just 48 hours before the first leg.
Southampton subsequently defeated Boro 2-1 after extra-time in the second leg to secure their place in the final.
Middlesbrough have demanded Southampton are excluded from the play-offs
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Middlesbrough confirmed they had sought to participate in the independent commission hearing but were refused permission to do so.
"The club regrets that outcome, given we are directly affected by the matters under consideration and hold relevant factual evidence as to the events in question and their competitive impact," the club stated.
Rather than allowing Boro to present their case directly, the disciplinary commission ruled that the EFL will handle proceedings and submit evidence against Southampton on their behalf.
The Teesside outfit has reportedly assembled substantial evidence supporting their allegations and had wished to deliver this material in person at the hearing.
A statement from the club.
— Middlesbrough FC (@Boro) May 15, 2026
Middlesbrough argued that the alleged surveillance of their preparations before such a crucial fixture strikes at the very core of fair play in football.
"The conduct at issue, namely the observation and recording of our training session ahead of a fixture of such significance, goes to the heart of sporting integrity and fair competition," the statement declared.
The club maintained that preventing Southampton from appearing at Wembley represents the sole appropriate punishment for the alleged breach.
Boro urged the EFL to pursue this sanction "in order to protect the integrity of the game, safeguard all member clubs, and deter any attempt in the future to obtain an unfair and unlawful advantage in pursuit of promotion to the Premier League".
The scheduled final against Hull City on 23 May now faces potential postponement depending on how the legal proceedings unfold.
Southampton's place in the play-off final is under threat
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The initial hearing is set to take place on or before Tuesday, though any subsequent appeal would need to be resolved before the following Saturday, creating considerable uncertainty for supporters, players and staff at all three clubs involved.
The EFL confirmed on Thursday that contingency arrangements are in place for various outcomes.
Middlesbrough have reportedly engaged prominent sports lawyer Nick De Marco to represent their interests in the matter.
The club's statement concluded with a warning that it "reserves all its legal rights".