"Justin has been absolutely outstanding, not only in the support of the Great Britain Olympic team but of golf in the Olympics as well, and to have athletes of that stature in addition to athletes who have medalled in five consecutive games and others defending titles, which they did absolutely successfully, was a very powerful thing".
A total of 67 medals, with 27 golds, put Team GB second in the medal table - above China for the first time since the latter returned to the Games in 1984.
Joy did come for many Brazilians on the final day and fittingly in football.
This was followed by Bolt winning gold in the 100-metre event for the third straight Olympics.
Michael Phelps, Usain Bolt and Neymar Jr. joined the podium for being the most-talked-about and mentioned athletes on Facebook and Twitter, in that order.
Russian Federation - with around half their team, including the track and field stars, banished from Rio following doping revelations - finished fourth with 19 golds.
"There you go. I'm the greatest", he said.
Japan came home with its highest-ever medal tally, leaving a sizeable mark on the competition through the performances of athletes such as gymnast Kohei Uchimura and wrestler Kaori Icho.
"To win the first medal and a world record, it was a fantastic achievement and permeated through the rest of the athletes".
Zac Efron kissing 19-year-old Simone Biles, who won a record of four gold medals in women's gymnastics in a single games, was the most retweeted athlete tweet during the games, amassing almost 163,000 retweets and nearly 459,000 likes as of now.
The top Facebook post was of beloved Portuguese soccer player Cristiano Ronaldo congratulating Jamaican sprinter Bolt for his gold medal victories in the 100-meter, 200-meter and 4x100-meter relay. "It is nearly impossible to say", she said.
Off-field scandal also struck during the Games as police seized passports, phones and computers in a raid on the Irish Olympic office, following the arrest of Irish International Olympic Committee member Patrick Hickey over an alleged black market tickets scam.
Farah's heroics and other astonishing performances took the spotlight off the long list of security scares and logistical problems which were a regular feature of South America's first Olympics.
India, for the record, finished in tied-67th place alongside Mongolia, with one silver and one bronze.