IAABO 173 Hall of Fame

IAABO 173 has established of a Hall of Fame for those retired and active members who have significantly contributed to the association, officiating and to the community. On March 28, 2019, IAABO 173 hosted their first Hall of Fame banquet and announced the inaugural class. HOF nominees must meet four of the following criteria: 20 years of service to IAABO, strong community service history outside of basketball as well as basketball related, one MSHSAA Basketball Final Four Appearance and their overall character. Active members candidates must then be voted into the HOF by the general membership of IAABO-173. 


The Retiree Inaugural class welcomes Earl Burns, Carl Madsen and Bill Yoffie. The four active member elected members are Greg Ransom, Mark Halsell, and John Hohenstein.

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 HOF Winners Greg Ransom, Mark Halsell, John Hohenstein and Carl Madsen

HOF Members

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Earl Burns

Earl Burns helped found IAABO 173 after he moved to the St. Louis area from Delaware. He served as the first association president in 1997 and held that office until 1980 and then again from 1982 and 1983.


While living on the east coast, Earl was an accomplished basketball official at the high school and college level. He worked multiple state championships as well as numerous college level games, eventually working his way to the Division I level. He is a member of the Delaware High School Officials Hall of Fame.


While in the St. Louis area Earl had many accomplishments as a basketball official. He worked multiple MSHSAA final fours. At the college level, Earl worked Junior College playoffs as well as working in the MIAA.


Earl is retired and now resides in Florida.

Bill Yoffie

Bill Yoffie is one of the founding fathers of IAABO 173. Bill seized the leadership reigns within five years of joining our association serving as Vice President in 1982 and 1984 before ascending to its Presidency in 1986 and serving in that capacity until 2003. Bill is one of the longest-standing office holders in our history.


In these leadership roles, Bill was instrumental in establishing our association as a teaching, assigning and community service organization. He served as a MSHSAA clinician for 12 years and five years as a MSHSAA Rules Interpreter. He was instrumental in establishing the Team Camp concept to improve the quality of officiating. Bill’s reputation and leadership of IAABO 173 were critical to establishing its assigning relationship with the Gateway Athletic Conference.


Bill served as a MSHSAA basketball official for 40 years, working final fours in 1987, 1991 and 1994. On the collegiate level, Bill was also a high-level official, working multiple NJCAA regional and championship tournament games. He also achieved postseason assignments in the NAIA, NCAA Division III and MIAA.

Bill remains a strong supporter of IAABO 173. Even after his retirement from officiating, Bill has continued to support the associations fundraising efforts and its community service activities.


Bill and his wife Barbara have been married for 42 years and have one son and three grandchildren.

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Carl Madsen

Carl Madsen is a true officiating legend and has achieved a rare level of success in both football and basketball. In football, Carl has achieved success at all levels of officiating, High School, College and the NFL. Carl was hired in the NFL as an umpire in 1997 and worked on the field until 2008. He then moved to the replay booth where he currently works. Carl has worked a number of playoff games, including multiple AFC Championships and the Pro Bowl.


While well-known for his role as a football official and his status as an NFL official, Carl was also one of the pillars of IAABO’s 173 founding and success. As a founding member, Carl served as a Rules Interpreter at various times for IAABO 173 and MSHSAA from 1989-1997.


Beyond being recognized as a rule’s expert, Carl was also an exceptional basketball official. He worked the MSHSAA high school playoffs for 28 consecutive seasons and routinely was called on to officiate some of the biggest area high school basketball games. Carl was a common sight at the city’s biggest tournament championship games. Carl officiated in six MSHSAA state quarterfinal games and worked the MSHSAA Final Four in 1989 and 1995. Carl is also a member of the Saint Louis Officials Association Hall of Fame. He was inducted in 2009.


Carl was born and raised in St. Louis. He attended Northwest High School where he played football, basketball and baseball. He then attended Washington University on an academic scholarship and later earned his M.B.A. from Northern Colorado. While an undergraduate, Carl was a United States Air Force ROTC member and was commissioned as a 2nd Lieutenant. Carl served in the United States Air Force from 1973-1976.


Even with his continued success as an official in the NFL, Carl has remained a loyal supporter of IAABO 173 by regularly supporting its fundraising efforts and community service activities.


Carl and his wife Beverly have been married for 45 years and have one son and one grandchild.

Greg Ransom

  Greg Ransom is responsible for taking IAABO 173 to the next level and has been a true visionary since he joined in 1986. While Greg served as a MSHSAA official from 1985-1998, his colossal impact on the direction of this organization began in 1989 when he became IAABO 173’s Secretary/ Treasurer, a role he has continued to hold for the past 29 years.


Greg’s vision and passion for this organization has led him to start some of the most lasting community and organizational initiatives - the things that truly set this organization apart from being known only for its work on the court that makes it so much more than just an officiating group.


In 1996 with the idea of training officials on three-person court mechanics, Greg co-founded IAABO’s team camp. This concept has been highly effective for the past 22 years and has evolved into not just a training process for officials but also as a key process to rate officials for assignments.


In 2005, Greg founded the Golf Scramble, with the idea of bringing officials together with coaches and athletic directors in a non-adversarial setting. This event has become the engine that funds the IAABO scholarship program. Founded in 2006, the Scholarship Program has funded more than $198,000 in scholarships to deserving students in the Gateway Athletic Conference, AAA conference and the Metro Catholic Conference.


One of Greg’s most significant achievements centers on his work with the Coaches v. Cancer organization. In 2010, he was appointed chairperson for Coaches v. Cancer Committee and started a shoot-out to raise money and awareness for the American Cancer Society. In 2015, the Coaches vs. Cancer Holiday Tournament started, and is one of the area’s most competitive tournaments. In 2016, he received the Mission Hero Award from the America Cancer Society. In 2018, he was appointed to the Coaches v. Cancer National High School Council.


Greg’s work has resulted in incredible contributions to our community. Under his leadership, IAABO 173 has raised nearly one million dollars through its Scholarship Fund and the Coaches v. Cancer Program.


Greg has also earned the respect from all corners of the local basketball community. Since 1998, he has served as the Supervisor of Basketball Officials for the GAC Conference. In 2008, he was named the Supervisor of Basketball Officials for the MCC Conference and in 2011, he was the Supervisor for the AAA conference. He was named IAABO 173’s Member of the Year in 1997-’98.


Greg resides in St. Charles, MO, and has been married to his wife Carol for 35 years.

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Mark Halsell

  If the gym is blowing up with tension, who is the official calling the game that is always smiling? The answer is IAABO 173’s own Mark Halsell. Mark is without a doubt an officiating giant in the St. Louis metropolitan area. Nobody does more big games. Nobody is more accomplished, and nobody does it smiling the whole time. Mark Halsell is an officiating institution.


Mark became a MSHSAA official in 1987 and joined IAABO 173 in 1991 where his time has been marked with extraordinary service to the organization.


He served as Vice-President from 1996 until 2011. Mark is the co-founder of the IAABO annual team camp and its Junior Basketball League, which was established in 2002 and continues to thrive today. Mark is also a major sponsor and supporter of IAABO 173’s annual scholarship fund. He currently serves as the director of our Officials Development Program. Mark has been recognized as Member of the Year in 1996-’97, 2002-’03 and 2015-’16.


While his service over the years has been amazing, Mark’s achievements on the basketball court are equally tremendous. Mark has officiated seven MSHSAA Final Fours and has been honored to officiate in five championship games. Mark also officiates at the Collegiate Division I, II III, NAIA and Junior College men’s level. In 2001, he was selected as a Division III Men’s National Tournament official. Mark has worked four NAIA Men’s National Tournaments and four Junior College National Tournaments, including three National Junior College National Championship games.


Mark serves as the co-coach for long, triple and high jumpers at Fort Zumwalt East High School Lions for both the boys and girls track and field teams.


Mark and Vicki are the proud parents of two children, Ebony and Mark, Jr.

John Hohenstein

   If there is a barn burner of a game coming up that will need an official who commands respect from every corner of the local basketball community. John Hohenstein is one of the very first names that will be mentioned for the assignment. A consummate professional, John is widely regarded as one of the most accomplished officials in the history of IAABO 173.


John always makes the games about the players, not himself. Officiating in a low-key, professional manner that has endured through the years, he has earned the praise of fellow officials, coaches, players and administrators.


John became a MSHSAA Official in 1985 and joined IAABO 173 in 1987. Throughout his tenure with us, he has officiated at the highest levels and faithfully served our membership.


John has worked three MSHSAA Final Fours and has been assigned to three Division II post-season assignments. In addition, he has officiated games at the junior college, NAIA, Division I and Division II levels.


John’s individual success has not stopped him from giving back. He served as the rule’s interpreter in 1989 and 1990 and has served as a mentor in the Officials Development Program for the last 11 seasons. In addition, over the past 30 years, John has been a constant presence in every community service project.


Outside of officiating, John serves as a faculty member at St. Paul’s Lutheran School. There, John serves as the North Campus Assistant Principal and as the school’s soccer coach and the 5th and 6th grade boys’ basketball coach.


John and his wife Becky have been married for more than 40 years and have three children.

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