South Yorkshire Police were apprehensive before the match that the game would be marred by violence as Millwall fans, who have a reputation for causing trouble, clashed with Barnsley fans.
Superintendent David Hartley, who was operations commander on the day, took no chances and fielded 200 police officers for the fixture.
Afterwards, he said: “I am delighted with the outcome.
“The only arrest was for possession of a controlled drug by a Barnsley man and several Section 27 dispersal orders were handed out which direct people to leave a particular area in order to prevent alcohol-related violence.
“Certainly there was a possibility of violence – our intelligence told that a number of individuals had travelled from Millwall with that intention and there was a risk of them getting together with Barnsley fans. We prevented that from happening.”
Match report: Sports Monday, Page 3.