Question: Foxcatcher was about the wrestling coach who was a champion in what form of the sport?

Context paragraphs:
Dennis Riccio: Dennis Riccio (born c. 1946) is a former American football player and coach.  He served as the head football coach at Frostburg State University in Frostburg, Maryland 1987 to 1991 and at St. Lawrence University in Canton, New York from 1992 to 1997, compiling a career college football record of 42–62.  Before his stint at Frostburg State, Riccio was the defensive coordinator at Augustana College in Rock Island, Illinois under head coach Bob Reade from 1983 to 1986, during which time the Augustana Vikings won four consecutive NCAA Division III National Football Championships. Ricco played college football at Illinois State University as a linebacker from 1964 to 1966.  Riccio also wrestled at Illinois State.  He moved to Augusta in 1979 to become head wrestling coach and assistant football coach.  He served as head wrestling coach there from 1979 to 1987, tallying a record of 63–56–3.

Mark Churella: Mark Churella, Sr. (born c. 1957) is a former American wrestler and collegiate wrestling coach.  He was a three-time NCAA national champion from 1977 to 1979.  He served as the head wrestling coach at UNLV from 1979 to 1984.  He has been inducted into the University of Michigan Athletic Hall of Honor (1996) and the National Wrestling Hall of Fame (1999) and was the 2012 recipient of the Bob Ufer Award for outstanding service to the University of Michigan Athletic Department.

Jim Zalesky: Jim Zalesky is an American college wrestling coach and is currently the head wrestling coach for the Oregon State Beavers and a member of the National Wrestling Hall of Fame.  Prior to joining the Beavers, he was the coach of the University of Iowa wrestling team from 1998–2006.  At Iowa, he succeeded Dan Gable as head coach, under whom he was a three-time NCAA champion.  He guided the Hawkeyes to NCAA team championships in 1998, 1999, and 2000.

Martin Burns: Martin Burns (February 15, 1861 – January 8, 1937) was an American world champion "catch-as-catch-can" wrestler as well as wrestling coach and teacher.  Born in Cedar County, Iowa he started wrestling as a teenager and made money traveling around the Midwest wrestling in carnivals and fairs.  As a professional he claimed the American Heavyweight Championship by defeating Evan "Strangler" Lewis in 1895 and held the title for two years.  Martin Burns himself claimed to have wrestled in more than 6,000 matches and is said to have lost only seven.  This was during the time when professional wrestling was a legitimate sport.  After the end of his active wrestling career he started a successful wrestling school in Omaha and later coached Cedar Rapids' Washington high school to the very first Iowa high school state wrestling tournament title.  He died in Council Bluffs in 1937.  In 2001 Martin "Farmer" Burns was inducted into the International Wrestling Institute and Museum Hall of Fame.  He was also inducted into the Wrestling Observer Newsletter Hall of Fame in 2002.  The Professional Wrestling Hall of Fame inducted Martin Burns in 2003.

Foxcatcher: Foxcatcher is a 2014 American true crime sports drama film produced and directed by Bennett Miller.  Written by E. Max Frye and Dan Futterman, the film stars Steve Carell, Channing Tatum, and Mark Ruffalo.  The film's plot is loosely based on the events surrounding multimillionaire Du Pont family heir and wrestling enthusiast John du Pont's 1986 recruitment of 1984 U.S. Olympic gold medalist brothers Mark (Freestyle Wrestling - 82 kg) and Dave Schultz (Freestyle Wrestling - 74 kg) to help coach U.S. wrestlers for participation in national, world, and Olympic competition, and the subsequent murder of Dave by John du Pont in January 1996.  Although the film's action is largely set at Foxcatcher Farm, du Pont's now-broken-up 800-acre suburban Philadelphia estate, the majority of the movie was filmed in the Pittsburgh metropolitan area.

Charles Mayser: Charles William Mayser (June 3, 1876 – July 14, 1967) was an American football, baseball, and wrestling coach.  He served three stints as the head football coach at Franklin & Marshall College (1913–1914, 1924–1925, 1944–1945) and was the head football coach at Iowa State University from 1915 to 1919, compiling a career college football record of 46–32–5.  Mayser was the head wrestling coach at Iowa State from 1916 to 1923 and at Franklin & Marshall from 1924 to 1946.  He was also the head baseball coach at Iowa State for two seasons, from 1919 to 1920, tallying a mark of 18–8–1.

Mark Schultz (wrestler): Mark Philip Schultz (born October 26, 1960) is an American Olympic and 2-time World champion freestyle wrestler and a Distinguished Member of the National Wrestling Hall of Fame, the San Jose Sports Hall of Fame, the California Wrestling Hall of Fame, and the San Mateo Peninsula Sports Hall of Fame.  Additionally, he was promoted to the rank of black belt in Brazilian Jiu-Jitsu by Master Pedro Sauer on January 23, 2016.

Anibál Nieves: Anibál Nieves Javier (born November 11, 1965) is retired male sport wrestler from Puerto Rico.  In college he wrestled for East Stroudsburg University where he achieved All-American status at the Division I level of the NCAA.  He twice represented his native country at the Summer Olympics: in 1992 and 1996.  Nieves also twice won a silver medal at the Pan American Games during his career.  After coaching stints at Springfield Technical Community College and American International College he became the head wrestling coach for Western New England University in 2007.  He currently serves as the head coach of the women's wrestling team at Springfield Technical Community College alongside his brother Alberto who serves as the head coach of the men's wrestling team at STCC.  He was a nine-time Puerto Rican champion.

Roger Kish: Roger Kish is an American wrestler and the current head coach of the wrestling team at North Dakota State.  A native of Lapeer, Michigan, Kish was a four-time Michigan state wrestling champion.  Kish is currently tied for ninth all time on the Michigan high school single season win record list. mhsaa He is second all time on the mhsaa career wins compiling a record of 252-2. mhsaa KIsh went on to become only the 11th 4 time champion in mhsaa history. mhsaa He next wrestled at the University of Minnesota, compiling a career record of 117-27.  As a sophomore and a junior, he was a two-time All-American who was also runner-up in 2006 and third place finish in 2007.  After leaving the University of Minnesota, Kish became an assistant wrestling coach at North Dakota State.  He was hired as the head coach at North Dakota State in 2011 and became the youngest NCAA Division I head coach in any sport.

Cary Kolat: Cary Joseph Kolat (born May 19, 1973) is an American wrestler and wrestling coach who earned two NCAA championships in 1996 and 1997 for Lock Haven University of Pennsylvania and was a member of the United States Men's Freestyle Wrestling Team from 1997–2001.  During that time he won silver and bronze medals at the 1997 Krasnoyarsk and 1998 Tehran FILA Wrestling World Championships as well as competing for the United States in freestyle wrestling at the 2000 Summer Olympics in Sydney, where he placed 9th.  Kolat is currently the head wrestling coach at Campbell University.

Supporting paragraphs: Foxcatcher Mark Schultz (wrestler)
Answer: freestyle