The correct answer to "Which Father-Son duo has the most NBA Championships?" is Mychal Thompson & Klay Thompson with 6 combined NBA Championships as players.

• Mychal Thompson (2 Rings): 1987 and 1988 Los Angeles Lakers (as part of the iconic "Showtime" squad backing up Kareem Abdul-Jabbar).
• Klay Thompson (4 Rings): 2015, 2017, 2018, and 2022 Golden State Warriors (as the Splash Brother and 5-time All-Star).
• Runner-Up: Joe "Jellybean" Bryant & Kobe Bryant with 5 combined rings (Kobe won 5 with the Lakers in 2000, 2001, 2002, 2009, 2010; Joe won 0).
• Tied for 3rd (4 Rings):
  • Bill Walton (2) & Luke Walton (2): 4 rings as players (Bill with '77 Blazers, '86 Celtics; Luke with '09 & '10 Lakers). If coaching rings are included, Luke adds the 2015 Warriors ring as an assistant coach, bringing their total to 5.
  • Dell Curry (0) & Stephen Curry (4): Dell was 1994 Sixth Man of the Year; Steph has 4 rings ('15, '17, '18, '22).
  • LeBron James (4) & Bronny James (0): LeBron has 4 rings ('12, '13 Heat, '16 Cavs, '20 Lakers); they became the first father-son duo to play together on the same NBA team in 2024.
• Historical First: Matt Guokas Sr. (1947 Philadelphia Warriors - BAA) and Matt Guokas Jr. (1967 Philadelphia 76ers) were the first father-son duo to both win championships in NBA/BAA history.

• Do Rick Barry and Brent Barry hold the title? No, Rick Barry won 1 (1975 Warriors) and Brent Barry won 2 (2005 & 2007 Spurs) for a total of 3. Even counting brother Jon and Drew, Brent was the only son to win a ring.
• What about Gary Payton and Gary Payton II? Both Gary Payton Sr. (2006 Heat) and Gary Payton II (2022 Warriors) won titles, giving them 2 total rings. They are one of only five duos where both father and son won at least one NBA title as players.
• Which duos have BOTH father and son winning a ring as players? Only 5 duos in NBA history: (1) Matt Guokas Sr. & Jr., (2) Rick & Brent Barry, (3) Bill & Luke Walton, (4) Mychal & Klay Thompson, and (5) Gary Payton & Gary Payton II.