Three youths and a 20-year-old man have been arrested after violence flared between Blackpool and Walsall supporters.
An investigation was launched following an incident in Walsall town centre ahead of the League One clash against the Seasiders last month.
The four - aged 16, 17, 17 and 20 - were arrested in the West Midlands area on suspicion of affray.
All four have been released on bail.
PC Stuart Spencer, from West Midlands Police, said officers were still investigating the incidents before the match and appealing for witnesses or anyone with information to come forward.