Olympic champion Joshua won the title in only his 16th
professional fight this month when he stopped American Charles
Martin in the second round of their fight also at the O2.
"I can't tell you how excited I am to fight again, especially at the
O2 which I have made my fortress," the 26-year-old Joshua said in a
"My coaches have watched Breazeale for a long time and they knew he
was going to be a player in the division and now we get the chance
to go to war on June 25."
Like Joshua, the Californian Breazeale is also undefeated as a pro
and appeared at the 2012 London Olympics, where Joshua won gold. His
record is 17-0, with 15 wins inside the distance.
Joshua's fellow Briton Tyson Fury holds the higher-profile WBA and
WBO heavyweight belts after beating long-time champion Wladimir
Klitschko in November.
Fury faces Klitschko in a re-match in Manchester on July 9.
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"I am looking to get passed Breazeale in style and continue moving
towards the unification fight everybody is waiting for," Joshua said
of a possible match-up with Fury.
Fury, who was forced to vacate the IBF belt, stoked the fire
recently when he described Joshua as a "pumped-up weightlifter".
(Reporting by Martyn Herman; Editing by Mark Heinrich)
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