Conor McGregor believes one change to his training camp could have altered the result of his fight with Floyd Mayweather.
The UFC star made an impressive start in Las Vegas last Saturday but faded once fatigue set in.
Referee Robert Byrd stepped in during the 10th round as Mayweather extended his unbeaten record to 50-0.
And in a lengthy Instagram post, McGregor paid tribute to his team and his opponent, but also admitted he could have done with more time to prepare.
He wrote: “Just coming back around after a whirlwind couple of days.
“Thank you to all the fans for the support of the fight and the event! Without your support we as fighters are nothing so I thank you all!
“Thank you to my team of coaches and training partners!
“I had an amazing team and It truly was an amazing and enjoyable camp, and honestly I feel with just a little change in certain areas of the prep, we could have built the engine for 12 full rounds under stress, and got the better result on the night.
“Getting to 12 rounds alone in practice was always the challenge in this camp. We started slowly getting to the 12 and decreasing the stress in the rounds the closer it got to 12. I think for the time we had, 10 weeks in camp, it had to be done this way.
“If I began with a loaded 12 rounds under much stress I would have only hit a brick wall and lost progress as a result and potentially not made the fight.