By Tim Royner: Anthony Joshua supposedly has been trimming his weight down from the 250s that he's been laboring around with in recent fights, but he weighed in at a hulking 245 ΒΌ pounds on Friday for his title defense of his IBF/WBA/WBO heavyweight titles against the much smaller 39-year-old Alexander Povetkin this Saturday night at Wembley Stadium in London, England.