Eddie Hearn has admitted that he was terrified when Anthony Joshua's dad confronted him after his son's defeat to Andy Ruiz.
On a famous June 2019 night in New York, AJ's undefeated boxing record came to a dramatic end as he was knocked out against the odds by his Mexican-American challenger.
Ruiz emerged victorious with the WBA, IBF and WBO heavyweight world titles, but it was a night of catastrophe for Joshua as he was floored four times and stopped.
Immediately after the fight was finished, the investigation began into what went wrong for Britain's champion.
One of the most emotional people demanding answers was AJ's father, Robert Joshua.
Joshua Sr stormed into the ring and first questioned his son's trainer at the time Rob McCracken.
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Then, when Ruiz was giving his post-fight interview, footage showed Joshua Sr confronting Hearn in the background.
AJ's father was clearly furious and escorted away by his son who pleaded with him to calm down.
Hearn, already devastated by Joshua's loss, looked stunned by the situation.
Four years on, when asked about his relationship with Joshua Sr, Hearn told GRM Daily: "It was just this one incident.
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"I've always got on really well with AJ's old man, we hug after every fight.
"But AJ lost in New York and we got in the ring and his dad came straight over to me.
Eddie Hearn reveals talks with Francis Ngannou's representatives over possible fight with Anthony Joshua in Africa"He said, 'Why was he staying in that place?' And I was just [speechless].
"I don't know, obviously it's very emotional watching your son get beat.
"He went to the trainer first, then he went to me and I've honestly never been so scared in my life.
"He's an absolute unit of a guy and the entire world is watching."
Thankfully for Hearn, Joshua was there to play peacemaker.
"I cant believe I just made my dream come true, the sky is the limit!"
Andy Ruiz Jr becomes the first Mexican heavyweight champion of the world! 🇲🇽
Anthony Joshua was shocked by Andy Ruiz Jr in a monumental heavyweight upset at Madison Square Garden: https://t.co/3Tl3sSp2VP pic.twitter.com/N9ZDyOW6Sx
— Sky Sports Boxing (@SkySportsBoxing) June 2, 2019ncG1vNJzZmiskaG4tLzOq6tnm5%2BifLS8zquraJqfrbavs45qa3FuY2yBcLLOqKuan5VisqWwyJ5koZ2Rp7tur86nnaunnqmypXnAp6uhp56uequ70qGsmmWUlrFut82omqSnpal8