The phrase "advanced athlete" is correct and usable in written English.
It can be used to describe someone who has a high level of skill, training, or experience in a particular sport or physical activity.
Example: "To compete at the national level, you need to be an advanced athlete with years of dedicated training."
Alternatives: "elite athlete" or "proficient athlete".
"Compared with humans, racehorses are incredibly advanced athletes.
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The quarterfinal round included 32 advancing athletes, and 30 of those competitors finished their races.
Overall, the Puerto Rican gymnast ranked 13th of the 27 advancing athletes, ending with a total score of 90.600 points.
In sports—one of the areas in which deliberate practice seems to make the most difference it turned out that the more advanced the athlete, the less of a role practice plays.
To quote from the blurb of one leading manufacturer: "As they put on their technologically advanced garments, athletes also put on a desire to perform beyond expectation and be greater than ever before…" In other words, buying this stuff makes us feel better.
Next on the OT continuum, separated by a thin line is a phase that typically includes both "positive" and "negative" training/performance, due primarily to a requisite increase in training load for the purpose of advancing the athlete's fitness level and competitive performance.
King was the youngest Bermudian participant during the 2008 Olympics, at 18 years of age, and Terceira was the oldest, at 37. No Bermudian athlete advanced to a final round during the 2008 Games.
In the qualifying round, Shenae was 10th in both the 100 hurdles and the triple jump; nine athletes advanced to the finals.
From time to time over the years, he had read sports columns in which the idea was advanced that Negro athletes lacked finesse that they might be good runners or jumpers but could never make it in a game like tennis.
