Bob Kloppenburg

Bob Kloppenburg (born July 28, 1927) is an American professional basketball coach, who served as an interim head coach of the Cleveland Cavaliers in the early 1980s. Kloppenburg later served as an assistant coach for the Seattle SuperSonics, Denver Nuggets and Toronto Raptors. While with the Seattle SuperSonics (1985–1996), Kloppenburg was the assistant coach for the NBA West All-Star team in 1994. He contributed to Seattle's three 60 win seasons in the 90's. His NAIA small college coaching career saw him win five district championships in twenty years for an overall record of 369-161. Widely regarded as the innovator of the SOS Defensive System, a system known for its ability to create turnovers because of "contact switching" on every screen and intense ball pressure with trapping principles. Kloppenburg is, together with Ernie Woods, the co-founder of basketball coaching website HoopTactics.com.

Kloppenburg played college ball at the University of Southern California with the famous proponent of the modern Triangle offense, Tex Winter. SOS Defensive System is used world-wide. Bob Kloppenburg has coached and taught other the "how to's" of the game for four decades at the entry level from high school to the pros. His defensive oriented teams have been consistent winners, and his reputation as an outstanding defensive coach and teacher, both at home and abroad, has taken him to 14+ countries around the globe to teach his system of defense. Now retired from active coaching, he is still effectively teaching his "SOS" defensive strategies to coaches with his same patent vim, vigor, and vitality. Kloppenburg has been married for over 60 years to Gayle Kloppenburg. Together they have two children, Gary and Kim. They also have six grandchildren: Sonja, Ian, Carlotta, Paige, Gabe, and Tess as well as two great grandchildren: Kyson and Kameron.

He attended John Marshall High School in Los Angeles, leading his basketball team to the Los Angeles City Championship, in a season in which he was named the Southern California High School Player of the Year. He was named to the charter class of the school's basketball Hall of Fame, and was inducted in its first ever Athletic Hall of Fame on June 15, 2012.

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