Thursday 15 October 2026

Ronnie Nunn

Director of Officials

National Basketball Association

 

Ronnie Nunn, the NBA’s Director of Officials, is a veteran of 23 NBA seasons. During his officiating career, which spanned 19 seasons, Nunn worked 1,134 regular-season, 73 playoff and four NBA Finals games, as well as the 1996 NBA All-Star Game, the 1993 McDonald’s Championship in Munich, Germany, the NBA Japan Summer Charity Games in 1996 and the 2000 Mexico Challenge. He has also been involved in the WNBA’s mentor program and is an NBA instructor during the summer.

 

Nunn handles the day-to-day management of the officiating staff, including daily instruction on the correct application of NBA playing rules. He reports directly to Stu Jackson, Executive Vice President, Basketball Operations.

 

Prior to joining the NBA as an official, Nunn officiated in the CBA for two years, and officiated Pro-Am basketball in New York City for two years. He also has one year of high school officiating experience in New York and New Jersey, and worked as a special education teacher for 10 years.

 

Nunn was an assistant coach at Pace University from 1978-1980 and at his alma mater, Brooklyn Tech High School from 1976-77. He played professionally on the National Basketball Circuit of Mexico from 1972-74 and was named MVP in 1973, and Best Player of the Decade (1970s). Nunn played collegiate basketball for three seasons at George Washington University where he became the Colonials’ leading scorer and a member of the 1,000 points club in 1972. He was inducted into the George Washington University Hall of Fame in 1997 and named to the school’s All-Century Team. Nunn received his undergraduate degree from George Washington and an M.S. at the College of New Rochelle and an M.S. at Queens College.

 

Nunn, along with his wife, Andee, an American Studies teacher at Danbury HS, has established the Nunn-Better Scholarship Award, given to students of diverse backgrounds who have demonstrated academic excellence and have overcome other obstacles in their lives. The award is offered to students of Danbury High School and The Hord Foundation.

 

Born and raised in Brooklyn, N.Y., Nunn currently resides in Danbury, Conn. He is the father of two daughters, Ilana who works as a publicist, and Alexi who works as an attorney. He is also a member of the local NAACP and Danbury’s Concerned Black Men, an organization that tutors and mentors minority students.

 

In 2009 in Katowice Ronnie was an instructor at EMW Referee’s Camp.

 

Check “Officials Time Out” by Ronnie Nunn

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Check “Double Dribble” by Ronnie Nynn

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Efim Resser

Efim Resser was born on February 27, 1952 in USSR.

He is a citizen of Germany.

Height 179 cm, weight – 81 kg.

Graduate of the University, profession – insurance broker.

Languages spoken: English, German, Russian;

Married, has two children.

 

Efim Resser is a former basketball player.

He is a national referee since 1972 (USSR), 1992 (Germany).

 

1985 – FIBA referee

As a referee he participated in more than 500 international games in many continents.

He officiated for the first Dream Team in the Olympic Games in Barcelona in 1992, following by three World and five European Championships, two European Cups finals.

 

2001 till 2004 Euroleague/ULEB referee

2002 FIBA Commissioner

2004 ULEB Commissioner

Stelios Koukouleikidis

Greek National league A1 referee from 1990 to 2009
FIBA referee from 1992 to 2011
Euroleague referee 2000-2009
Major tournaments: Olympic Games 1996 Atlanta
Europe U18 men (1994, 1997, 2006)
World U18 Men (1995, 1999)
Final 4 women 1994 Poznan

Lubomir Kotleba

Mr. Kotleba`s basketball career was the following:

1960 – 1968 – a player

1968 – 1970 – a coach

1970 – 1975 – a team manager

1963 – 1975 – a referee on national level,

1975 – 1989 – an international referee (FIBA)

 

Mr. Kotleba became a Central Board member of Slovak basketball federation in 1972, and since 1981 he was a Central Board member of Czechoslovak basketball federation.

Since 1989 till now Mr. Kotleba is a FIBA full-time staff. ( FIBA Sport Director )

Mr.Kotleba officiated 4015 games, three Olympic Games ( two finals), five World Championships, twelve European Champioships, six championships of other continents and ten European Club Competitions finals.

As a commissioner he officiated five Olympic Games, twenty two World Championships, twenty one European Championships and about 100 European Club Competitions games.

Besides as a FIBA lecturer he participated in 96 referee clinics in 57 countries of five continents.

Efim Resser

Efim Resser was born on February 27, 1952 in USSR.

He is a citizen of Germany.

Height 179 cm, weight – 81 kg.

Graduate of the University, profession – insurance broker.

Languages spoken: English, German, Russian;

Married, has two children.

 

Efim Resser is a former basketball player.

He is a national referee since 1972 (USSR), 1992 (Germany).

 

1985 – FIBA referee

As a referee he participated in more than 500 international games in many continents.

He officiated for the first Dream Team in the Olympic Games in Barcelona in 1992, following by three World and five European Championships, two European Cups finals.

 

2001 till 2004 Euroleague/ULEB referee

2002 FIBA Commissioner

2004 ULEB Commissioner

Stelios Koukouleikidis

Greek National league A1 referee from 1990 to 2009
FIBA referee from 1992 to 2011
Euroleague referee 2000-2009
Major tournaments: Olympic Games 1996 Atlanta
Europe U18 men (1994, 1997, 2006)
World U18 Men (1995, 1999)
Final 4 women 1994 Poznan

Lubomir Kotleba

Mr. Kotleba`s basketball career was the following:

1960 – 1968 – a player

1968 – 1970 – a coach

1970 – 1975 – a team manager

1963 – 1975 – a referee on national level,

1975 – 1989 – an international referee (FIBA)

 

Mr. Kotleba became a Central Board member of Slovak basketball federation in 1972, and since 1981 he was a Central Board member of Czechoslovak basketball federation.

Since 1989 till now Mr. Kotleba is a FIBA full-time staff. ( FIBA Sport Director )

Mr.Kotleba officiated 4015 games, three Olympic Games ( two finals), five World Championships, twelve European Champioships, six championships of other continents and ten European Club Competitions finals.

As a commissioner he officiated five Olympic Games, twenty two World Championships, twenty one European Championships and about 100 European Club Competitions games.

Besides as a FIBA lecturer he participated in 96 referee clinics in 57 countries of five continents.