I realized he was strong to the head but weak to the body so I was switching it up.
Prices for Joshua vs Povetkin on Sky Box Office were £19.95.
Joshua was speaking in the ring following his knockout victory against Alexander Povetkin on Saturday night and said that he didn't want to talk about anyone other than WBC champion Wilder.
It forms part of a packed line-up of great fights coming up soon, with Saul "Canelo" Alvarez fighting "GGG" Gennady Golovkin, Anthony Joshua vs Alexander Povetkin and even Floyd "Money" Mayweather set to face Manny Pacquiao once more.
Joshua's next fight will take place on April 13, again at Wembley Stadium, and an opponent is yet to be announced.
"We will go away now and try and make a fight with Wilder", Hearn said.
Povetkin got tagged with several good jabs by Joshua in the sixth round.More news: Oil edges up on supply concerns
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Povetkin looked hurt but was able to get back to his feet, but was still badly hurt.
Joshua vs Povetkin Live Stream - What time does it start?
After taking that early blow to the nose, Joshua returned the favour later, causing a cut above the Russian's eye which left him struggling to see clearly from his left eye. Bigger names may loom large on the horizon, but Joshua will know better than to overlook his challenger.
Povetkin, the 2004 Olympic super-heavyweight champion and WBA's mandatory challenger, lost to Klitschko in Moscow in 2013 - the only defeat in the 39-year-old's professional career to date. Povetkin was aggressive and tried to hurt Joshua with short right hands, but often landed on the guard of Joshua or swung at air.
Then come the seventh round he unleashed a flurry of punches to send Povetkin down.
Another right-left combination downed Povetkin, who somehow made the count, only to stagger into a left hook which saw him slump into the ropes, leaving referee Steve Gray with no option but to intervene. The fight will show everything.