Ireland head coach Zaur Antia burst into Bernard Dunne's room in his smalls to announce the plan was in place for Kellie Harrington to win gold.
And Dunne revealed that the digging that was done to get extra video footage of Beatriz Ferreira was worth it's weight in the precious metal.
"I knew we were ready," smiled Dunne, the Ireland team leader in Tokyo. "Zaur came into my room two nights ago - he came running in his underwear and he said, ‘we got it this, this the plan’.
"We had been watching video (of Ferreira) - but we got another video of her against a Korean opponent, and there were those little bits in it that we have taken.
"And Kellie just implemented the tactical plan perfectly.
"The best thing Kellie has shown here is her focus, her concentration and her ability, regardless of what the pressure is to still perform that last’s round was just…to be able to perform under that pressure, it takes so much, and she was able to maintain her focus and that was the most impressive thing I saw from her."
Dunne was a world champion as a pro but he said that Harrington's achievement was "priceless".
And he added: "From the moment anybody takes up boxing, the dream is to become an Olympian, firstly.
"Then to become an Olympic medallist is amazing but to become an Olympic gold medallist - my hairs are tingling on the back of my neck now just thinking about what she has achieved and done out here.
"But you know it has been a long road to get here. People see the nine minutes of work but the last 15 months has just been torture for us. It really has been.
"The uncertainty when we left London, the uncertainty of not being able to train, were the Games going to happen and even up until the week we're in here, you're hearing about the potential that they're going to cancel them.
"To maintain that focus and to maintain that ability to drive yourself in training and then to achieve an Olympic gold medal...I’m delighted for Kellie, delighted for the team.
"I’m not surprised. We came out here with seven athletes who were capable of performing on the world stage and you've all seen that. It's a credit to this and this coaching and support team that they have achieved."
Irish boxing's performance director has a contract on the table to sign for two more years - strange timing, really, with the Paris Olympics just a year beyond that - but he has also copped some flak from within the IABA.
"My job is to support this team as best I can and focus on the team," Dunne said. "There's always going to be noise, there's always going to be people who don’t agree with what you do and that's part of life.
"I can accept that and deal with that and I have big enough shoulders to take it on.
"Our focus has always been to get the best out of the best and you see from what has been achieved here that we managed it."
