Knowing when to call it quits as a professional athlete is never easy.
That applies to everyone from low-impact role players to superstar faces of the sport, and ahead we'll take a look at some former stars who have reached the end of the line.
Some of these players are toiling in free agency, some are headed there this offseason and a couple are still under contract for 2019.
The one thing they have in common is that retirement is calling.
Whether it's because of advanced age, a rapid decline in production or some combination of the two, these players have arrived at the end of their respective careers.