Police are warning football fans in West Yorkshire that they will take a "strong stance" against troublemakers this season.
Officers said with an increase in the number of derby matches being played they were committed to tackling violent or disruptive behaviour.
Last season police secured 26 banning orders against men involved in disorder during West Yorkshire fixtures.
Supt Paul Money said these should act as a deterrent.
He added: "Attending a football match is safer now than ever before, and one of the main reasons for this is because we take a strong stance against any behaviour which is likely to spoil true supporters' enjoyment of the game.
"The real supporters attending matches in West Yorkshire should only have one thing to worry about, and that's their team's performance on the pitch."
Leeds United will play derbies against Sheffield United, Barnsley and Doncaster Rovers in the Championship while Huddersfield Town will play Sheffield Wednesday in League One and Bradford City will play Rotherham United in League Two.