NBA center selected 18th overall by the Washington Wizards in 2008. He competed in the 2011 NBA Slam Dunk Contest, where he finished second to Blake Griffin. He won an NBA Championship as a member of the Golden State Warriors in 2017 and 2018.
He attended the University of Nevada, but left for the NBA after his sophomore year.
His father George Montgomery was a second round draft pick in 1985 and both his mother and sister played in the WNBA. In 2015, he began dating Giselle Ramirez. They have a daughter named Genevieve together.
He played under coach George Karl for the Denver Nuggets.