Jarrell Miller has apologized after his fight against Anthony Joshua was called off.
He said he "messed up" after a failed drugs test didn't allow him a licence for the bout.
Miller was supposed to meet British IBF, WBA and WBO heavyweight champion Joshua at Madison Square Garden on June 1.
In the video message, Miller said "there were a lot of ways to handle the situation, I handled it wrongly and I'm paying a price for it."

Cerundolo's Miami magic continues with stunning Medvedev upset
LA28 unveils floral-inspired visual identity for 2028 Olympics
Alcaraz stunned by Korda at Miami Open
Mboko reaches Miami quarters, earns Roddick's Grand Slam backing
Former All Blacks assistant McLeod named Wallabies defence coach
