Question: What player, also known by his nickname Dr. Dunkenstein, retired following the 1990-91 Utah Jazz season?

<P0-S0>  Following the season, Darrell Griffith retired. <P0-S1> The 1990–91 NBA season was the Jazz's 17th season in the National Basketball Association, and 12th season in Salt Lake City, Utah. <P0-S2>  Early into the season, the Jazz traveled to Japan to play their first two games against the Phoenix Suns at the Tokyo Metropolitan Gymnasium. <P0-S3>  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. <P0-S4>  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. <P0-S5>  Malone and Stockton were both selected for the 1991 NBA All-Star Game. <P0-S6>  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. <P0-S7>  This was also their final season playing at the Salt Palace. <SEP> <P1-S0> The 1999–2000 NBA season was the Utah Jazz's 26th season in the National Basketball Association, and 21st season in Salt Lake City, Utah. <P1-S1>  During the offseason, the Jazz signed free agent Olden Polynice, then later on signed Armen Gilliam in January. <P1-S2>  The Jazz were now the oldest team in the NBA still led by John Stockton and Karl Malone, who were both selected for the 2000 NBA All-Star Game. <P1-S3>  The Jazz would recapture the Midwest Division with a solid 55–27 record, qualifying for the playoffs for the 17th straight season. <P1-S4>  In the playoffs, the Jazz defeated the Seattle SuperSonics three games to two in the Western Conference Quarterfinals, but would lose in five games to the Portland Trail Blazers in the semifinals for the second consecutive year. <P1-S5>  Following the season, Jeff Hornacek retired after playing fourteen years in the NBA, Gilliam also retired while Howard Eisley was traded to the Dallas Mavericks, and Adam Keefe was dealt to the Golden State Warriors. <SEP> <P2-S0> 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. <SEP> <P3-S0> Jazz Bear is the mascot for the Utah Jazz, a National Basketball Association (NBA) franchise based in Salt Lake City, Utah. <P3-S1>  Jazz Bear was introduced to the league on November 4, 1994. <P3-S2>  Since Jazz Bear's introduction, he has performed at over 800 Jazz home games. <P3-S3>  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. <P3-S4>  In 2006, Jazz Bear was inducted into the Mascot Hall of Fame. <P3-S5>  The Bear has suffered many injuries while performing, including tearing his bicep and rupturing a tendon in his calf.