Durant was born on September 29, 1988, in Washington, D.C., to Wanda (nee Durant) and Wayne Pratt. When Durant was an infant, his father deserted the family; Wanda and Wayne eventually divorced, and Durant's grandmother Barbara Davis helped raise him. By age 13, his father re-entered his life and traveled the country with him to basketball tournaments. Durant has one sister, Brianna, and two brothers, Tony and Rayvonne.

On July 4, Durant announced his intentions to sign with the Warriors in The Players' Tribune. The move was received negatively by the public and NBA analysts, with many comparing it to LeBron James's 2010 off-season departure from the Cleveland Cavaliers to join the Heat. On July 7, Durant officially signed with Golden State on a two-year, $54.3 million contract with a player option after the first year. Reflecting on the move for Sports Illustrated, Ben Golliver wrote, "He chose an ideal roster fit and a shot at playing for the highest-scoring offense the NBA has seen in decades. He chose life alongside Stephen Curry and Klay Thompson, the greatest shooting backcourt in history, and he chose to go against Andre Iguodala and Draymond Green, two elite defenders, in practices rather than in Western Conference finals games."  Durant made his debut for the Warriors on October 25 against the San Antonio Spurs, scoring a team-high 27 points in a 129-100 loss. On November 26, he recorded 28 points, 10 rebounds, five assists, and a career-high six blocked shots in a 115-102 win over the Minnesota Timberwolves, becoming the first player in team history to finish with at least 25 points, 10 rebounds, five assists, and five blocks in a single game. On February 11, in his first game back in Oklahoma City since leaving for Golden State, Durant scored 34 points while being booed throughout the night as he helped the Warriors defeat the Thunder for the third time that year. In March, Durant suffered a Grade 2 MCL sprain and a tibial bone bruise, which forced him to miss the final 19 games of the season. Golden State finished the year with a 67-15 record and entered the playoffs as the No. 1 seed.  Durant returned from injury in time for the playoffs and helped the Warriors advance to their third consecutive Finals while becoming the first team in league history to start the postseason 12-0. In Game 1 of the series, Durant had 38 points, eight rebounds, and eight assists to lead the Warriors past LeBron James and the defending champion Cleveland Cavaliers, 113-91. He helped the Warriors go up 3-0 in the series with a 31-point effort in Game 3, including the go-ahead 3-pointer with 45.3 seconds left in regulation. In Game 5, he scored 39 points to go with seven rebounds and five assists in a series-clinching 129-120 win. For the Finals, Durant was the Golden State's top scorer in every game, averaging 35.2 points, 8.4 rebounds, and 5.4 assists while shooting 55.5 percent from the field, 47.4 percent from three-point range, and 92.7 percent from the free throw line. He was subsequently named the Bill Russell NBA Finals Most Valuable Player.

Did he have a good season with the Warriors?
Durant made his debut for the Warriors on October 25 against the San Antonio Spurs, scoring a team-high 27 points in a 129-100 loss.