nba_tv_caNBA Live Streaming Free, NBA Live, NBA Online, Watch Live National Basketball Association Matches, National Basketball Association Live, Basketball Online. The National Basketball Association (NBA) is the men’s professional basketball league, The NBA is one of the four major North American professional sports leagues. NBA players are the world’s best paid sportsmen, by average annual salary per player, The Boston Celtics have won the most championships with 17 NBA Finals wins. The second most successful franchise is the Los Angeles Lakers, who have 16 overall championships (11 in Los Angeles, 5 in Minneapolis). National Basketball Association. Official home of the most compelling basketball action from the NBA.