Full name is Klay Alexander Thompson... Father, Mychal, was the No. 1 overall pick in the 1978 NBA Draft by the Portland Trail Blazers and played 12 seasons in the NBA, winning two NBA Championships with the Los Angeles Lakers... Older brother, Mychel, appeared in five games with the Cleveland Cavaliers in 2011-12 and played for the Santa Cruz Warriors, Golden State’s NBA G League affiliate, for four seasons (2013-14 through 2016-17)... Younger brother, Trayce, was selected in the second round of the 2009 Major League Baseball Draft by the Chicago White Sox, played for the Los Angeles Dodgers and Oakland Athletics and is currently in the Cleveland Indians organization... Mother, Julie, played volleyball at the University of San Francisco... His #1 was retired by his alma mater, Santa Margarita Catholic High School, in a ceremony on campus in January 2017... Served as the Grand Marshal of the GoPro Grand Prix of Sonoma Verizon IndyCar Series season finale at Sonoma Raceway on Sept. 17, 2017; Gave the official command of, “Drivers, Start Your Engines,” waved the green flag and took a high-speed lap around the road course with racing legend Mario Andretti in a two-seat Indy car... Family was honored in the Bahamas in the summer of 2015, including a welcome reception hosted by the government of the Bahamas in Nassau and the commissioning of Mychal “Sweet Bells” Thompson Boulevard in honor of his father... As a senior in 2007-08 at Santa Margarita, earned Division III State Player of the Year honors, leading the Eagles to a 30-5 record and the Division III State Championship... Scored 37 points in the state title game, connecting on a state finals record seven three-pointers.