THE Anthony Joshua vs Charles Martin undercard for their IBF world heavyweight title fight is taking shape.

The April 9 bill at the O2 in London will host a second world title fight, when the USA’s Eric Hunter challenges IBF featherweight champion Lee Selby.

Matthew Macklin will fight Brian Rose in a middleweight contest that neither man can afford to lose.

George Groves continues his comeback from his latest world title defeat, taking on Scotland’s rugged Dave Brophy.

Hard-hitting London lightweight Ohara Davies will fight Andy Keates for the vacant English title.

WBA bantamweight titlist Jamie McDonnell is expected to be added to the card, as is Conor Benn, the son of legendary British middleweight Nigel, who will be making his professional debut.