Westley Sissel Unseld Sr. (March 14, 1946 – June 2, 2020) was an American professional basketball player, coach and executive. He spent his entire National Basketball Association (NBA) career with the Baltimore Washington Bullets. Unseld played college basketball for the Louisville Cardinals and was selected with the second overall pick by the Bullets in the 1968 NBA draft. Known as "The Incredible Hulk" and "The Oak Tree" because of his immense physical presence, Unseld was named the NBA Most Valuable Player and NBA Rookie of the Year during his rookie season and joined Wilt Chamberlain as the only two players in NBA history to accomplish the feat. He won an NBA championship with the Bullets in 1978 and the Finals MVP award to go with it.
After his retirement as a player in 1981, Unseld worked with the Bullets-Wizards organization as a vice president, head coach and general manager.
Unseld was inducted into the Naismith Memorial Basketball Hall of Fame in 1988 and the National Collegiate Basketball Hall of Fame in 2006. His son, Wes Unseld Jr., is currently an assistant coach for the Chicago Bulls.