Maybe, just maybe, there's a staged fight and all was already set for the script. Who knows?, that's impossible to tell. What's easy to tell is that they are now millionaires, if they weren't before already ... and that the videos of them partying leaves a trace of opulence, a degree of shallowness and in my personal opinion, a reinforced need for better days to the world we live in. Why? If only people invested that much money and energy in educating the masses, maybe we wouldn't be foraging Mars for an inter-spatial way out of a doomed planet.
But I had promised a post summarising exactly what happens to one's brain after a full blow to one's head in a boxing fight. However, as I stated many times before in the past, there is no point in producing information when such information is already available at a decent-to-excellent level for free, in the web.
The website MIC Network Incorporated shared with their audience on the 4th of May 2015 a post by Max Plenke (is that his real name or he just found it funny to address himself as close to Max Planck as possible) that goes through what I intended to cover on this very same post. The post image they used shows Floyd Mayweather and Manny Pacquiao (I guess, I've seen these two like three times on TV news for a brief minute or so).
But so you don't have to read integrally their good piece of investigation journalism, allow me to summarise what is shared by them in a few bullet-points, adding to the affirmations a few articles that can help you understand the biological aspect of the injuries provoked when one is hit:
- Flash of light, brief blackness, blurred vision depending on the severity of the strike ;
- "Coup" and "contre-coup" of the brain (where the brain travels back and forth against and from the skull barrier)  ;
- Average punch force that in the case of Olympic fighters is enough to break bricks, and would definitely break the bone wasn't it for the mobility of the human head and neck ;
- Short-term and long-term alterations to a non-rehabilitated brain (should rest for a year) that can result in impaired judgement, personality changes, chronic traumatic encefalopathy (e.g., Parkinson's- and Alzheimer's-like lesions to the brain) . These are also linked to behavioural changes towards a more violent pattern as the article so well reports.
 Doggart, J. H. (1955). "The impact of boxing upon the visual apparatus". AMA Arch Opthalmology, 54(2), pp. 161-169.
 Williams, D. J. and Tannenberg, A. E. G. (1996). "Dementia pugilistica in an alcoholic achodronplastic dwarf". Pathology, 28(1), pp. 102-104.
 Handratta, V., Hsu, E., Vento, J., Yang, C., Tanev, K. (2010). "Neuroimaging findings and grain-behavioral correlates in a former boxer with chronic traumaticbrain injury". Neurocase - The Neural Basis of Cognition, 16(2), pp. 125-134.
 Walilko, T. J., Viano, D. C., Bir, C. A. (2005). "Biomechanics of the head for Olympic boxer punches to the face". British Journal of Sports Medicine, 39(10), pp. 710-720.
 Mendez, M. F. (1995). "The neuropsychiatric aspects of boxing". The International Journal of Psychiatry in Medicine, 25(3), pp. 249-262.
Post image obtained from MIC, This is what happens when you get punched in the head, [https://mic.com/articles/117340/this-is-what-happens-to-your-brain-when-you-get-punched-in-the-head#.Hv70b35jT].