Four years ago, I enjoyed the most exhilarating moment of my career so far - and yet I can hardly remember anything about the first fight with Leo Santa Cruz!
To become the first fighter from Northern Ireland to win world titles at two different weights was very special. After unifying the super-bantamweight belts earlier in 2016 with my win over Scott Quigg, I then took Leo's WBA featherweight championship in New York's Barclays Centre.
It's just the case with me that I don't remember a great deal about most of my fights. The day after, I went to Annie Moore's bar to celebrate with my fans and despite telling myself to take it easy, as soon as I walked in I was handed a pint and put on someone's shoulders. I downed the pint and there's not a lot more I recall after that as I got hammered and was apparently put to bed early.
The fight with Santa Cruz was one that should have happened earlier in my career as I had defeated Hugo Cazares in the SSE Arena in a final eliminator for his WBC super-bantamweight title in 2014, but he did other things and the chance came for me to face Kiko Martinez for his IBF belt. But he was always a man I wanted to take on and when the opportunity came I went for it.
By that stage I had done a deal with American promoter Al Haymon and the first fight I had with him was in El Paso against the late Alejandro Gonzalez. I was on my backside twice, totally drained at the weight but got through it to win.
That performance in 2015 made the Quigg and Santa Cruz teams more confident about facing me and set me up for an amazing 2016.
If the offer to fight Quigg had not been so big I would probably have moved up to featherweight straight away because it was killing me to make super-bantam. After I dealt with Quigg I was immediately given the shot at Santa Cruz and felt confident. Instead of feeling drained on the scales, I felt strong and I knew I could beat him even though I was the underdog with the majority of the pundits.
I knew that they had me as the outsider because I was away from home and he was - at that time - a three-weight world champion.
I had stayed in an area of New York called New Rochelle and the people were great - they even made July 12 'Carl Frampton Appreciation Day'.
The one thing I knew I had to do in the fight was match the output of Santa Cruz. I'm a more relaxed fighter but I knew I had to go out of my comfort zone and I got my mind ready to throw a lot more punches than I normally would because he wasn't going to stop throwing and that's how the fight went.
Early on I had him rocked and it should have been counted as a knockdown because the ropes kept him up. I didn't feel like I could go in for the kill, I still felt I had to be careful. By the midway point I had won most of the rounds, then he had some success and I do remember in the last few rounds - particularly before the last round - telling myself that I had to bite down on my gumshield and fight hard because I couldn't let Santa Cruz steal rounds.
At the final bell I felt I had done enough and even though one judge had it a draw, when I heard 117-110 from another I thought, 'That has to be for me, there's no way Santa Cruz got that score' and then when the decision was announced it was a moment of sheer ecstasy. It was an incredible feeling.
To have my family there, my wife and kids - it's the only fight Rossa has been at - and all the fans who travelled was incredible. The only annoying part was waiting for the New York Athletic Commission and WADA to work out whose jar I would urinate in first for my drugs tests. They were busy arguing over that while I was exhausted and desperate to get back to the dressing room and be with my family.
By the time that was sorted and the press conference was over I got back to the hotel and while everyone was expecting a big party I just had a beer and a slice of pizza and then went to bed - I was totally wrecked. I had worked so hard for that moment.
The wins over Quigg and Santa Cruz led to me being given the Ring Magazine Fighter of the Year award as well as the Boxing Writers of America Fighter of the Year award. I remember standing giving a speech and looking down at these great names like Vasyl Lomachenko and Bernard Hopkins and it felt a bit surreal that I was the one getting the award.
I remember at the Mayweather-McGregor fight going over to world welterweight champion Errol Spence like a fanboy for a photo and then he asked me to join him for a drink and I thought, 'Wow, Errol Spence knows me!'. The same night Santa Cruz's brothers tried to get me to go out on the drink with them but I had promised Christine I would behave so I dodged them.
Beating Santa Cruz was amazing… and we still have some unfinished business.