Joshua added the WBA title to his IBF belt but only after being knocked to the canvas by the 41-year-old Klitschko in the sixth round.
The Ukrainian was also sent crashing to the floor in the fifth round and twice more in the pivotal 11th as the 27- year-old British fighter took his record to 19 wins in 19 fights.
What can I say? 19-0, three and a half years in the game. As I said, Im not perfect but Im trying and if you dont take part youre going to fail, said Joshua who was put on the canvas for the first time in his career.
As boxing states, you leave your ego at the door and you respect your opponent. So a massive shout out to Wladimir Klitschko.
A third defence of his IBF world heavyweight title also earned Joshua the vacant WBA belt as he became the first British heavyweight since Lennox Lewis in 2002 to hold two versions of the world title. It was Klitschkos first stoppage defeat since Lamon Brewster beat him in 2004 and leaves his record at 64 wins and five defeats.
The best man won tonight and its a massive event for boxing, Klitschko told Sky Sports.
Two gentleman fought each other. Anthony was better today. Its really sad I didnt make it tonight.
Klitschko was trying to reclaim two of the three belts he lost to Joshuas fellow Briton Tyson Fury by an upset on points in November 2015.
The Ukrainian had not fought since then after Fury twice pulled out of rematches and entered the ring as the underdog. AFP
Source : http://assamtribune.com