South Africa's Chad Le Clos after placing fourth in the final of the men's 200-meter butterfly (AP Photo/Matt Slocum)

RIO DE JANEIRO (AP) -- It took mere minutes for pranksters to change South Africa swimmer Chad Le Clos' Wikipedia page following his defeat to Michael Phelps in the 200-meter butterfly. 

The first was in his biography section, saying Le Clos had "died by the hands of Michael Phelps, being literally blown out of the water by the greatest American since Abraham Lincoln."

In the personal information section, it listed Le Clos' nickname as "Michael Phelps Pool Boy." Minutes later, the nickname had been changed to "The guy who lost to Phelps." 

 

Eventually, all the changes were removed. 

Phelps won the event for his 20th gold medal, while Le Clos finished off the podium in fourth. 

The two are heated rivals and Le Clos upset Phelps at the 2012 Olympic Games when he beat Phelps in the 200-meter butterfly for his first gold medal and Phelps' first international loss in the event in a decade.

If anyone had forgotten they were rivals, they were reminded during the semifinals when Phelps was caught shooting daggers at Le Clos in the warmup room while Le Clos shadowboxed. Le Clos later tried his own staredown on the pool deck before their semifinal swim. 

After winning Tuesday night, Phelps did the Dikembe Mutombo no-no-no finger wag to let Le Clos know he's still the best in the world.