The badminton events of World Games I were held on July 25–28, 1981, at the San Jose Civic Auditorium in San Jose, California, in the United States.
 These were the first World Games, an international quadrennial multi-sport event, and were hosted by the city of Santa Clara.
 China, in its first summer multi-sport event since the 1936 Summer Olympics, competed in badminton only, winning four of the five gold medals.
 Seventeen of the countries at these Games participated in badminton, making it one of the most represented sports.
 The players executive of the International Badminton Federation, Ciro Ciniglio, expressed disappointment at the lack of media coverage of badminton, saying, "We have many world champions competing here and ... were hoping all these great players would draw crowds.
 ... The United States over the years has had very good players, some of the finest.
 It was our hope to help the sport gain popularity in the United states by showcasing all this fine talent."
The IFBB Arnold Sports Festival, also known as the Arnold Schwarzenegger Sports Festival is an annual multi-sport event consisting of professional bodybuilding ("Arnold Classic"), strongman ("Arnold Strongman Classic"), fitness, figure and bikini weekend expo.
 It was established in 1989 and is named after Arnold Schwarzenegger.
 The main event is held annually around late February or early March in Columbus, Ohio, United States by the International Federation of BodyBuilding & Fitness (IFBB).
 It is the second most prestigious event in professional men's bodybuilding, physique, figure and bikini; as well as formerly the second most prestigious event in professional female bodybuilding.
Tug of war was contested in two weight classes for men at the 1981 World Games.
 These were the first World Games, an international quadrennial multi-sport event, and were held in Santa Clara, California in the United States.
 The 640kg tug of war competition was the first event of the games, as it was held immediately following the opening ceremony at the same location, Buck Shaw Stadium.
 The Swiss athletes were associated with a club from Engelberg, while the United States was represented by a club from Orfordville, Wisconsin.
 In an interview during the Games, Albert Sabin, the chief judge of the event, revealed that he was from Birmingham, then hastened to add, "England, not (Birmingham,) Alabama."
The 1954 Asian Games (officially known as the Second Asian Games – Manila 1954) was a multi-sport event held in Manila, Philippines from May 1 to May 9, 1954.
 A total of 970 athletes from 19 Asian National Olympic Committees (NOCs) competed in 76 events from eight sports.
 The number of participating NOCs and athletes were larger than the previous Asian Games held in New Delhi in 1951.
 This edition of the games has a different twist where it did not implement a medal tally system to determine the overall champion but a pointing system.
 The pointing system is a complex system where each athlete were given points according to their achievement like position in athletics or in swimming.
 In the end the pointing system showed to be worthless as it simply ranked the nations the same way in the medal tally system.
 The pointing system was not implemented in future games ever since.
 Jorge B. Vargas was the head of the Philippine Amateur Athletic Federation (In 1976, was renamed as Philippine Olympic Committee) and the Manila Asian Games Organizing Committee.
 With the second-place finish of the Philippines, only around 9,000 spectators attended the closing ceremony at the Rizal Memorial Stadium.
 The events were broadcast on radio live at DZRH and DZAQ-TV ABS-3 on delayed telecast.
The State Games of America is a biennial amateur multi-sport event held in North America.
 It is organized by the National Congress of State Games.
 Athletes qualify for the Games by earning a medal in their respective State Games in the previous two years.
 Typically, over 12,000 athletes compete in the Games each time they are held.
The 1948 Summer Olympics (also known as the Games of the XIV Olympiad) was an international multi-sport event held from July 29 through August 14, 1948, in London, United Kingdom.
 It was the first Olympic Games to take place in twelve years, due to the Second World War (and was known informally as "The Austerity Games" - largely due to countries having to bring their own food due to shortages in Britain), with London being chosen as the host city in March 1946.
 London had previously hosted the 1908 Summer Olympics, and was due to have hosted the event in 1944.
 A record 59 nations were represented by 4,104 athletes, 3,714 men and 385 women, in 19 sport disciplines.
 Following the Second World War, Germany and Japan remained under military occupation and had not yet formed their National Olympic Committee, and so were not invited.
 The only major Axis power to take part in the Games was Italy.
 The Soviet Union also did not form a National Olympic Committee and was ineligible to be invited to compete.
 However, they did send observers and competed in the 1952 Summer Olympics.
 Following the threats of a boycott from Arab countries should an Israeli team fly their flag at the opening ceremony, the International Olympic Committee (IOC) excluded Israel from the Games on a technicality.
Canada has competed at every edition of the Pan American Games since the second edition of the multi-sport event in 1955.
 As of the last Pan American Games in 2015, Canada is third on the all time medals list, only behind the United States and Cuba.
 Canada is also one of nine countries to have competed at the only Winter Pan American Games, and only of one two (the other being the United States) to win a medal at the games.
Bryan Leininger is a former US National Champion in judo.
 He competed in the Olympic festival as a preliminary to the Olympic trials in 1991.
He typically competed in the over 209lbs division.
The Canada Games are a strictly amateur multi-sport event held in Canada biannually, alternating between Summer and Winter editions.
 Athletes enter the Games representing each of their respective 13 provinces or territories.
 The first Games were held as part of Canada's Centennial Year Celebrations in 1967.
 Ontario and Quebec remain the only two provinces to win the Canada Winter Games thus far, with British Columbia and Alberta constantly secured in the third and fourth positions.
The U.S. Olympic Festival was an amateur multi-sport event held in the United States by the United States Olympic Committee in the years between Olympic Games.
 Started in 1978 as an American counterpart to the communist Spartakiade – a similar event held on a quadrennial basis by the former Soviet Union and its former satellite in East Germany.
 As the competitive position of U.S. athletes in the Olympics slipped relative to that of the Soviets and East Germans, it was felt the U.S. needed some kind of multi-sports event to simulate the Olympic experience.
 It was originally called the National Sports Festival and was the nation's largest amateur sporting event, before ending in 1995.

Question: What is an amateur multi-sport event in the United States in which Bryan Leininger competed in?
Answer: U.S. Olympic Festival