Twenty-three football fans were arrested after violence erupted between Wolves and Port Vale supporters during their League One derby.
Two fans were treated for dog bites after dog units were used to quell trouble that broke out in Burslem town centre in the wake of Wolves’ 3-1 victory at Vale Park.
Most of the trouble took place in Burslem town centre where there was brawling in the street.
Police said that all 23 people arrested in the disorder had been bailed pending further investigations and that two-thirds of those arrested were believed to be Port Vale supporters.
Many of the 4,500 Wolves fans were prevented from leaving the ground for up to 15 minutes because of the trouble.
Hamil Road, beside the stadium, was cordoned off by police, forcing the visiting fans to take the long route back into town.
Staffordshire Police criticised both sets of fans for confronting officers as well as each other.
Extra stewards were brought in to separate fans after Wolves' third goal.
Chief Inspector Dave Bird, of Staffordshire Police, said "We are disappointed by the actions of this significant number of so-called fans who attended today's fixture intent on becoming involved in disorder.
"All those arrested will be questioned about their actions and CCTV evidence from today will be examined by officers."