I keep hearing this Parker has a granite chin, but has he fought anyone that has power like AJ has. I can have a granite chin fighting Hughie no power fury FFS.
Granite is firmly under what Parker is made of: Tuatanium > Vibranium > Adamantium > Mithril > Diamond > Granite.
Pretty obvious that Parker hasn't faced a puncher like Joshua. Ruiz Jr was probably the hardest puncher he faced and even he isn't that big a puncher with only 20 KO's in 30 fights. Andy went 8 rounds with Zumbano Love after Joshua KO'ed him in 2 and Liakhovich went 10 rounds with Andy after Liakhovich was KO'ed by Wilder, Helenius and Jennings in 3 of his 4 previous fights. Parker's chin seems good so far but he was forced back by Takam and Ruiz Jr, which suggests while he can take a shot he can be hurt enough to prevent him standing his ground. We'll find out how good Parker's chin really is soon, I'm sure Joshua will find it and test that chin.
Its the heavyweights, they have always said in this division if landed flush anybody can be knocked out in this division. Oh, except Parker apparently.