Welsh boxer Liam Williams faces Patterson in Cardiff
British and Commonwealth champion Liam Williams will fight mandatory challenger Ahmet Patterson in Cardiff in a headline bout on 22 October.
Super-welterweight Williams sold more than £50,000 worth of tickets in July when he stopped rival Gary Corcoran at the Wales Ice Arena.
His reward is another opportunity to box in front of his own fans, at Cardiff's Motorpoint Arena.
Williams, 24, is trained by Welshman Gary Lockett.
Super welterweight Williams began his preparation by travelling to Spain to spar with British world champion Kell Brook, who challenges Gennady Golovkin on 10 September at the O2 Arena.
British middleweight champion Chris Eubank JR will also be fighting on the 22 October bill, taking on Tommy Langford.