Michael Phelps

Michael Phelps swims his final Rio race Saturday night. On Saturday afternoon, he made it clear the 4x100-meter medley relay will also be his last race ever.

"I'm not going four more years," Phelps said on Facebook Live. "This is it. Tonight's the last time I'll be suiting up and racing at this level."

Some of Phelps' teammates were in the room with him and chanted, "Four more years!" The 31-year-old wasn't feeling it.

"No Olympics 2020," he says. "Nope. Everyone wants four more years. I'm done."

TMZ cut notable parts of the video:

And here's the full discussion via Facebook:

On Friday morning, Phelps' long-time friend, teammate and fellow competitor Ryan Lochte said, "I guarantee he will be there," when asked about the potential of seeing Phelps in Tokyo in 2020.

Related: Katie Ledecky Practiced Until 1:15 A.M. -- After Winning Gold

"I will just clarify that Ryan doesn’t know what he is talking about," Phelps responded to Lochte Friday night after taking silver in the 100 m butterfly. "I am not coming back in four years."

Phelps has won gold in the 4x100 m medley relay in the last three Olympics. If the U.S. wins Saturday, the event will join the 200 m medley and 4x200 freestyle relay as races Phelps has won four gold medals (from 2004-2016). Phelps currently has four gold medals and one silver medal in Rio.

More Olympics:
-- 5 Weirdest Jobs At This Year's Olympics
-- We Never Understood How Great Ryan Lochte Was
-- Michael Phelps' 20th Gold Medal Is His Most Emotional

-- Follow Jeffrey Eisenband on Twitter @JeffEisenband.