Hundreds of men suspected of beating their wives and girlfriends have been told their "card is marked" in the run up to the World Cup.
Senior police officers are bracing themselves for an increase in reports of domestic abuse during the month-long football tournament.
Research has shown major sporting events, mainly involving rugby and football, are linked to a rise in violence.
Gwent Deputy Chief Constable Carmel Napier said reports soar by almost a third on England match days.
Ms Napier, who has national responsibilities for tackling domestic violence, said many forces have identified their 10 most prolific offenders.
The senior officer said many men will receive visits, phone calls and letters warning them of the consequences of further crimes.
In some cases risk assessments similar to those applied to sex offenders have been undertaken by police and other officials.
Ms Napier said women who fear they are more at risk during the World Cup should not wait and contact police straight away.
She said: "There is no excuse for domestic violence and perpetrators must be clear that the World Cup does not give them any justification for partaking in abusive behaviour."
