Dudley and Undertaker had a match and the WWE Hall of Famer mistakenly whacked a steel chair on the back of his opponent’s head.
According to Ringside News, the tag team specialist said he was aiming for Taker’s back but the chair went too high and busted the legend open.
The Deadman then needed medical attention and got nine stitches in the head.
The WWE legend told Busted Open Radio: “I hit Undertaker in the back of the head with a steel chair and put nine staples in his head.
“What do you think the repercussions should have been? On a personal level, what do you think should have been between me and The Undertaker?
“A fight in the locker room. He should have been waiting for me and ready to punch me in the face after it happened.
“On a professional level what do you think should have happened? Fired or suspended or something.
“You can’t hit somebody in the back with a chair but let the chair ride too high and hit him in the back of the head.
“My chair shot was supposed to hit him square in the back. My chair shot went high and the lip of the chair caught The Undertaker in the back of the head — split him clean open in the beginning of the match — nine staples.”
Dudley feared he would be severely punished for the terrible botch but Undertaker reacted in a gracious manner.
The Phenom had a calm discussion with the ex-Hardcore Champion and helped him understand why he needed to be more careful next time.
He added: “I should have been crucified. You know what happened after the match? I went into the locker room just me and him, he didn’t yell.
“His voice never went above the tone I’m using right now. He politely asked me to sit down and he then educated me on why that can never happen again.
“He didn’t threaten me. He told me how it could affect my career when it came to carelessness moving on.
“It was handled in the most professional of ways. Because he knows just like I know just like everybody else knows that it ain’t freaking ballet.
“Accidents do happen. Mine was a completely careless accident. I know how I made my mistake but I should have never made my mistake.”
Undertaker is scheduled to return at WWE Super Show-Down where he will face Triple H for the last time ever.