Nick Collison's No. 4 will be the first number retired by the Oklahoma City Thunder.

The Thunder announced Saturday that they'll retire Collison's jersey in a ceremony on March 20.

"I am thrilled that Nick Collison will be the first Thunder player to have their number retired in Oklahoma City," Thunder chairman Clayton I. Bennett said. "He has cemented himself as part of the fabric of this community and our organization by setting an example of commitment, hard work and authenticity. Congratulations, Nick."

Collison retired in May after spending his entire career with the Thunder franchise. He was selected by the Seattle SuperSonics 12th overall out of Kansas in the 2003 draft. The Sonics relocated to Oklahoma City for the 2008-09 season.

Six numbers were retired by the franchise in Seattle.