Quinn Alexander Cook (born March 23, 1993) is an American professional basketball player who last played for the Fujian Sturgeons of the Chinese Basketball Association (CBA). He played college basketball for the Duke Blue Devils and was one of the top-rated basketball recruits in the class of 2011. Cook won the 2015 NCAA national championship with Duke, and won two NBA championships, one with the Golden State Warriors in 2018 and one with the Los Angeles Lakers in 2020. He has also played for the Dallas Mavericks, New Orleans Pelicans, and Cleveland Cavaliers.
Cook started his high school career at DeMatha Catholic High School in Hyattsville, Maryland. Cook played his freshman, sophomore, and junior, seasons at DeMatha. During Cook's career at DeMatha, the Stags had an 85–18 record and finished as the number one ranked team in the state of Maryland during Cook's junior season.
During the summer prior to his senior season, Cook announced that he would be transferring to Oak Hill Academy in Mouth of Wilson, Virginia.
Following his junior season, Cook was named the Washington Post All-Met Player of the Year, becoming the first junior in 30 years to receive the award and was the only junior to be named 2010 All-Met first team. Cook was also named to the Washington Post 2009 All-Met third team, the only sophomore to be listed among the ‘09 All-Met teams.
Cook was invited to play in the fifth annual Boost Mobile Elite 24 game prior to his senior season, joining future Duke teammates Austin Rivers, Alex Murphy, and Michael Gbinije in the game.
During Cook's senior season at Oak Hill Academy, he led the Warriors to a 31–4 record, averaging 19.1 points, 10.9 assists, and 2.5 steals. After the season, Cook was named a Second Team All-American by Maxpreps and played in the 2011 McDonald's All-American Game.
Cook signed his letter of intent to play basketball at Duke University on November 4, 2010; his announcement was broadcast live on ESPNU. Cook chose Duke over Villanova, UCLA, and North Carolina. When asked why he decided to attend Duke, Cook stated, "The reason I chose Duke is because of Coach K."
Cook was ranked the #38 player by ESPNU, the #38 player by Rivals.com, and the #37 player by Scout.com coming out of high school.
Cook was a part of a five-player recruiting class for Duke in 2011, which also included Austin Rivers, Alex Murphy, Marshall Plumlee and Michael Gbinije. Duke's 2011 class was the second-best recruiting class in the entire country according to ESPNU.
Although Duke traveled to China and Dubai during the summer prior to his freshman season, Cook was forced to sit out all four exhibition games due to a lingering knee injury that he suffered during the summer before his freshman year. Cook's debut with the Blue Devils was October 14, 2011, at Duke's annual Countdown to Craziness, he recorded seven points and two assists in his first game as a Blue Devil. Cook's career high during his freshman season was 14 points, which came against UNC Greensboro on December 19, 2011.
Cook was a member of the 2015 NCAA national champion Duke team, averaging 15.3 points and 2.6 assists per game.
After going undrafted in the 2015 NBA draft, Cook joined the Oklahoma City Thunder for the Orlando Summer League and the Cleveland Cavaliers for the Las Vegas Summer League.
In September 2015, Cook signed with the Cavaliers, but was waived on October 24 after appearing in six preseason games. Six days later, he was acquired by the Canton Charge of the NBA Development League as an affiliate player of the Cavaliers. On November 14, Cook made his professional debut in a 106–99 loss to the Maine Red Claws, recording 15 points, a rebound, an assist, and a steal in 36 minutes. On February 5, 2016, Cook was named in the East All-Star team for the 2016 NBA D-League All-Star Game as a replacement for the injured DeAndre Liggins. On April 11, Cook was named Rookie of the Year after averaging 19.6 points and 5.4 assists to go along with 3.9 rebounds in 43 games while shooting 47 percent from the field and connecting on a team-high 86 three-pointers. At the season's end, he was named to the All-NBA D-League Third Team and the All-Rookie Team.
In July 2016, Cook joined the NBA D-League Select Team for the 2016 NBA Summer League. On September 24, 2016, he signed with the New Orleans Pelicans, but was waived on October 22 after appearing in three preseason games. On November 1, Cook was reacquired by the Canton Charge. On February 18, 2017, he was named the MVP of the 2017 D-League All-Star Game at the Mercedes-Benz Superdome after recording an 18-point, 12-assist double-double.
On February 26, 2017, Cook signed a 10-day contract with the Dallas Mavericks. He made his NBA debut the following day, recording two points, two rebounds, and two assists in 17 minutes off the bench, in a 96–89 victory over the Miami Heat. On March 7, Cook had his best game as a Maverick, scoring 10 points in a 122–111 victory over the Los Angeles Lakers. He made five total appearances for the Mavericks, averaging 5.4 points, 0.6 rebounds, and 2.4 assists.
On March 8, 2017, after his 10-day contract with the Mavericks expired, Cook returned to the Charge.
On March 19, 2017, Cook signed a 10-day contract with the New Orleans Pelicans. He went on to sign a second 10-day contract on March 29, and a rest-of-season contract on April 8. That same day, Cook had a career-high 22 points with three assists and a rebound in a 101–123 loss to the Golden State Warriors. He made nine appearances for New Orleans, recording averages of 5.8 points, 0.4 rebounds, and 1.6 assists. On July 25, Cook was waived by the Pelicans.
Golden State Warriors (2017–2019)