Russell Westbrook retires after 18 NBA seasons as triple-double king

Russell Westbrook was one of the biggest stars in the NBA, the top basketball league in the world.

He played professional basketball for 18 years and wore the uniforms of seven different teams, though he is most famous for the Oklahoma City Thunder.

Westbrook is the best player ever at getting "triple-doubles," which means getting at least 10 points, 10 rebounds, and 10 assists in a single game.

He finished with 209 triple-doubles, more than anyone else in NBA history.

In the 2016-17 season, he averaged a triple-double for the whole year and won the league's Most Valuable Player (MVP) award.

He also won two scoring titles, made nine All-Star teams, and won an Olympic gold medal with Team USA in 2012.

This summer, two teams asked him to come back and play, but they wanted him to take a smaller role.

Instead, he decided to retire and walk away on his own terms.

He said goodbye to fans with a video posted on social media, and he will be remembered as one of the toughest and most exciting players of all time.