But, the 31-year-old said in his goodbye to the sport Tuesday that he's now ready to move on to "the next chapter" of his life.
"From now on, decisions I make won't be solely based off how they affect my performance, but how they affect my family, friends, health and happiness," Fraser said.
"I look forward to remaining a part of the Crossfit community, I just won't be doing it from the competition floor any longer."
Fraser -- who grew up a weight lifter with goals of winning Olympic gold -- jumped into the Crossfit world in 2012 and eventually overtook Rich Froning as the sport's GOAT.