Short answers, pulled from the story.
Rick Barry is the only player in history to lead the NCAA, the ABA, and the NBA in scoring in a single season each. No other player has achieved that triple across all three major levels of American basketball.
Barry shot free throws underhand throughout his career. His ABA career free throw percentage of .880 is the best in league history, and his .900 percentage at the time of his NBA retirement in 1980 was the best of any NBA player. In one season with the Houston Rockets he set a then-NBA record with a .947 percentage.
Barry wore number 24 as a tribute to New York Giants outfielder Willie Mays, who wore that number and whom Barry idolized growing up in New Jersey. As a child, Barry once skipped school to shake Mays's hand at the Polo Grounds.
Barry won the NBA championship with the Golden State Warriors in 1975, sweeping the Washington Bullets four games to none. He was named Finals MVP after averaging 29.5 points, 5.0 assists, and 3.5 steals per game in that series.
Barry holds the all-time NBA Finals record for career scoring average at 36.3 points per game. That mark surpasses the Finals averages of all other players in league history.
Five of Barry's sons played professional basketball: Brent, Jon, Drew, Scooter, and Canyon. Barry is the only NBA player to have three sons play in the NBA at the same time. When Brent won the NBA title with the San Antonio Spurs in 2005, Rick and Brent became only the second father-son pair to each win an NBA championship as players.