In the NBA league, most players will experience a noticeable decline after the age of 30, and they may be replaced by younger players at any time, ultimately being eliminated by the league. In recent years, several powerful stars have suddenly bid farewell to the NBA stage. If it weren't mentioned, many fans might not even know that these six stars have faded away from the NBA stage. For example, Austin Rivers, the pride of the Rivers family, was once the top high school player in the United States. With his outstanding skills and sharp breakthroughs, he became a good choice for a substitute shooting guard. At his peak, he was also a bench bandit, averaging over 10 points per game for multiple seasons. However, at the age of 30, which is considered the prime of a player's career, he unexpectedly announced his retirement, surprising many fans. Serge Ibaka was also a tough player in the NBA, especially on the defensive end, where he was an undoubted tough guy. During his time with the Thunder, he was the shot-blocking champion, and his combination of height and agility made him extremely intimidating under the basket. After a major injury, he underwent a splendid transformation and successfully won the championship. Now, with his achievements, Ibaka has chosen to transfer to Europe, which can be described as having more money, less work, and being closer to home. Similarly, Derrick Rose's retirement was also unexpected. Last season, as a backup point guard for the Grizzlies, he still managed to contribute an average of 8…