The Cavaliers–Warriors rivalry is a National Basketball Association (NBA) rivalry between the Cleveland Cavaliers and the Golden State Warriors. While the two teams have played each other since the Cavaliers joined the league in 1970, their rivalry began to develop in the 2014–15 season, when they met in the first of four consecutive NBA Finals, from 2015 to 2018. Prior to the streak beginning, no pair of teams had faced each other in more than two consecutive Finals. Of these four series, the Warriors won three championships (2015, 2017, and 2018) and the Cavaliers, one (2016). The rivalry is considered to have ended in 2018, following LeBron James' departure from the Cavaliers to the Los Angeles Lakers.