His international IDF ranking of 138th was not high enough to qualify him directly. Only the top 22-ranked were automatically qualified for the first round of 32; ten slots are allotted with geographical considerations to ensure participation of athletes from all continents and to seek representation from more nations; his Olympic appearance was by use of a slot devoted to Oceania (see Judo at the 2012 Summer Olympics – Qualification), per BBC 2011: "London 2012 Olympics qualifying: Judo".
See the complete list of matches at those games at Commonwealth Games Glasgow-Head to Heads (judoinside.com) and note that Fiakaifonu's name does not appear in that list.
london2012.com
"Nazario Fiakaifonu - Judo". Official site of the London 2012 Olympic and Paralympic Games. Archived from the original on 22 July 2012. Retrieved 26 July 2012.
"Judo - Schedule & Results". Official site of the London 2012 Olympic and Paralympic Games. Archived from the original on 26 July 2012. Retrieved 26 July 2012.
web.archive.org
"Nazario Fiakaifonu - Judo". Official site of the London 2012 Olympic and Paralympic Games. Archived from the original on 22 July 2012. Retrieved 26 July 2012.
"Judo - Schedule & Results". Official site of the London 2012 Olympic and Paralympic Games. Archived from the original on 26 July 2012. Retrieved 26 July 2012.