Currently a power forward for the Seattle SuperSonics, and is well known in basketball circles for his accomplishments at the University of Kansas (KU). Teaming with fellow Iowan Kirk Hinrich for one of the best duos in college basketball, he helped KU reach two Final Fours (2002, 2003). Collison finished his college career as the leading scorer in the history of the Big 12 Conference (Since passed by Andre Emmett). Perhaps his best performance, at least in college, was in the 2003 NCAA tournament, in which he scored 33 points and grabbed 19 rebounds for a thrilling victory over the Duke University Blue Devils. In 2003, his Jayhawks lost to the Syracuse University Orangemen in the National Championship game, 78-81. During his time in college, he also played for the Dream Team basketball squad in the 2002 Olympics.
Like his KU teammate Kirk Hinrich, Collison played for four years in college. He was selected in the by the Sonics with the 12th pick of the 2003 NBA Draft, but missed the 2003-04 season with injuries to both shoulders. He made his regular season NBA debut on November 3, 2004 against the Los Angeles Clippers, scoring 3 points in an 84-114 loss.
Nick Collison's #4 jersey was retired by the Kansas Jayhawks at halftime of a 2004 match between Kansas and Michigan State University. His was only the eighth jersey retired by the university, to recognise his achievements in 2002-03 where he was NABC Player of the Year, a consensus First-Team All-American and Big 12 Player of the Year.
In 2006, Collison has strongly broken into the NBA scene for the SuperSonics, even earning a part time starting role.