Question: What was the nickname of the the basketball player who retired after the 1990-91 Utah Jazz season?
Context: The 2006-07 Utah Jazz season was the team's 33rd in the NBA.  They began the season hoping to improve upon their 41-41 output from the previous season.  They managed to improve by 10 games, finishing 51-31, and qualifying for the playoffs.The Jazz met the Houston Rockets in the First Round, and defeated them in seven games.  Then, they met the Golden State Warriors, who just came off a stunning upset in the First Round, in which they defeated the first-seeded Dallas Mavericks in six games in the Semifinals, but the Jazz swiftly dispatched the Warriors in five games, moving on to the Western Conference Finals.  However, their playoff run ended with a defeat to the eventual champion San Antonio Spurs in five games.  The Spurs would go on to win their fourth NBA Championship after sweeping the Cleveland Cavaliers in that year's NBA Finals.  Their Western Finals trip made this the most successful recent Jazz season as of 2017. Darrell Steven Griffith (born June 16, 1958), also known by his nickname Dr. Dunkenstein, is a retired American basketball player who spent his entire professional career with the Utah Jazz of the National Basketball Association. The 1990–91 NBA season was the Jazz's 17th season in the National Basketball Association, and 12th season in Salt Lake City, Utah.  Early into the season, the Jazz traveled to Japan to play their first two games against the Phoenix Suns at the Tokyo Metropolitan Gymnasium.  With the offseason acquisition of Jeff Malone from the Washington Bullets, the Jazz continued to play sweet music in the regular season with a 26–12 start.  They ended up falling one game short of the Midwest Division title with another stellar record of 54–28, as Karl Malone finished second in the league in scoring with 29.0 points per game, and John Stockton led the league with 14.2 assists per game.  Malone and Stockton were both selected for the 1991 NBA All-Star Game.  In the first round of the playoffs, the Jazz defeated the 4th-seeded Phoenix Suns in four games, but lost in the semifinals to the Portland Trail Blazers in five games.  This was also their final season playing at the Salt Palace.  Following the season, Darrell Griffith retired. Thurl Lee Bailey (born 7 April 1961) is an American retired professional basketball player whose NBA career spanned from 1983 to 1999 with the Utah Jazz and the Minnesota Timberwolves.  Bailey has been a broadcast analyst for the Utah Jazz and the University of Utah— in addition to work as an inspirational speaker, singer, songwriter, and film actor. The 2010–11 Utah Jazz season was the 32nd season of the franchise in Salt Lake City, and the 37th overall in the National Basketball Association (NBA).  On February 10, 2011, legendary Jazz head coach Jerry Sloan resigned in the middle of the season.  Tyrone Corbin was named the new head coach.  On February 23, 2011, the Jazz traded star player Deron Williams to the New Jersey Nets for two 1st round draft picks (New Jersey's 2011 and Golden State's conditional 2012) and players, Derrick Favors and Devin Harris. The 2013–14 Utah Jazz season is the franchise's 40th season in the National Basketball Association (NBA), and the 35th season of the franchise in Salt Lake City.  The season ended with the Jazz finishing last in their respective division and conference.  The season also concluded with the release of coach Tyrone Corbin. The 2015–16 Utah Jazz season was the 42nd season of the franchise in the National Basketball Association (NBA), and the 37th season of the franchise in Salt Lake City.  Utah missed the playoffs for the fourth year in a row, but remained in playoff contention until the final regular season game. This article is a list of seasons completed by the Utah Jazz of the National Basketball Association (NBA).  The Jazz joined the NBA as the New Orleans Jazz, an expansion team that began play in the 1974–75 season.  The Jazz relocated from New Orleans to Salt Lake City, Utah for the 1979–80 season.  As of April 15, 2015, the Utah Jazz are the last franchise to not record a 60-loss season. Jazz Bear is the mascot for the Utah Jazz, a National Basketball Association (NBA) franchise based in Salt Lake City, Utah.  Jazz Bear was introduced to the league on November 4, 1994.  Since Jazz Bear's introduction, he has performed at over 800 Jazz home games.  Utah Governor Gary Herbert declared October 10, 2013 as "Jazz Bear Day" in recognition of his 20th season as the Utah Jazz' mascot, and also his countless hours of community and public service and his standing as an important citizen of Utah.  In 2006, Jazz Bear was inducted into the Mascot Hall of Fame.  The Bear has suffered many injuries while performing, including tearing his bicep and rupturing a tendon in his calf. Jeremy Evans (born October 24, 1987) is an American professional basketball player for the Atlanta Hawks of the National Basketball Association (NBA).  He played college basketball for Western Kentucky before being drafted by the Utah Jazz in 2010.  Evans spent 2010–15 with the Utah Jazz, the 2015–16 season with the Dallas Mavericks and the 2016–17 season with Khimki in Russia.  In 2012, he was named the NBA slam dunk contest champion.
Answer: Dr. Dunkenstein