Jack Sikma is a former professional basketball player who is best known for his time with the Seattle SuperSonics. He was drafted by the SuperSonics in 1977 and played with them until 1986. During his time with the team, Sikma was a seven-time All-Star and was named to the All-NBA Second Team in 1979. He was also a key member of the 1979 championship team.

Sikma was known for his unique style of play, which included a deadly mid-range jump shot and a knack for rebounding. He was also an excellent passer and defender, making him a complete player. He was named to the NBA All-Defensive Second Team in 1981 and 1982.

After leaving the SuperSonics, Sikma played for the Milwaukee Bucks from 1986 to 1991. During his time with the Bucks, he was named to the All-Star team in 1988 and 1989. He also helped the team reach the Eastern Conference Finals in 1989.

Overall, Sikma had a successful and memorable career in the NBA. He was a seven-time All-Star, a member of an NBA championship team, and a two-time All-Defensive Second Team selection. He was also an excellent rebounder, passer, and defender, making him one of the most complete players of his era.