season high 19 points and added eight rebounds in a 113–120 loss to the Phoenix Suns. In the game, he also drew his 15th charge of the season, a majority of the 22 charges the Thunder had drawn as a team to that point in the season. That postseason, on May 15, 2011, Collison helped the Thunder to a Western Conference Semifinals Game 7 win over the Memphis Grizzlies, with 8 points and a playoff career high 12 rebounds. The next round, Collison and the Thunder lost to the Dallas Mavericks in the Conference Finals. In 2012, Collison helped the Thunder make the leap to the next level, and reach the NBA Finals, where they lost in five games to the Miami Heat, whom were led by Collison's fellow 2003 draftees LeBron James, Dwyane Wade, and Chris Bosh. On February 3, 2015, Collison signed a two-year, $7.5 million contract extension with the Thunder. On July 21, 2017, Collison re-signed with the Thunder to a one-year, minimum salary deal. Collison's final NBA game was played on April 11th, 2018 in a 137 - 123 win over the Memphis Grizzlies where he recorded 1 point and 1 rebound. Retirement On May 10, 2018, Collison announced his retirement from professional basketball. On January 12, 2019, the Thunder announced that they would be retiring Collison's No. 4 jersey, becoming the first number retired by the Thunder. Post-playing career Following his retirement as a player, Collison joined Thunder in the position of basketball operations representative. On August 10, 2021, he was promoted to the position of special assistant to executive Vice President and general manager. Personal life After the Sonics relocated to Oklahoma City, Collison continued to make his home in Seattle. Collison appeared on the cover of the 989 Sports video game NCAA Final Four 2004. The game was released on November 11, 2003 for the PlayStation 2. Collison has a daughter named Emma. His younger brother, Michael, played college basketball for their father's alma mater, Briar Cliff University in Sioux City, Iowa. NBA career statistics Regular season |- | style="text-align:left;"| | style="text-align:left;"|Seattle | 82 || 4 || 17.0 || .537 || .000 || .703 || 4.6 || .4 || .4 || .6 || 5.6 |- | style="text-align:left;"| | style="text-align:left;"|Seattle | 66 || 27 || 21.9 || .525 || .000 || .699 || 5.6 || 1.1 || .3 || .5 || 7.5 |- |