The fight is for the vacant United States Boxing Association's heavyweight belt.

Davies had won the vacant belt after it had been vacated by Napa prior to fighting for the European title.

This handed Witter an opportunity to fight Alexander for the now vacant belt.

He's also the current British super middleweight champion after beating Robin Reid for the vacant belt.

Saffiedine (12-3) was hoping to get one of the slots in an expected title fight for the vacant welterweight belt.

However, after Kessler dropped out, Froch met Abraham for the vacant belt in Group Stage 3 and won a decision to claim his title.

Limond won the vacant belt via unanimous decision.

Patrick would referee another rematch for the vacant belt, taking over for Charles Robinson (who had been knocked out during the bout).

Brook ended up winning the vacant belt with a 7th round stoppage of Jones who had come in at relatively short notice.

The longest reigning champion, Martin Stone won the vacant belt at Not Just For Christmas in an inter-promotional tournament.