Question: What is the nickname of boxer to which Jonas Čepulis lost in the finals by TKO?

Context paragraphs:
Jonas Čepulis: Jonas Čepulis (11 August 1939 – 28 May 2015) was a Lithuanian amateur heavyweight boxer who won a silver medal at the 1968 Olympics.  He won his first three bouts by technical knockout (TKO), and lost in the finals by TKO to the eventual gold medalist and future professional world champion George Foreman.

Rocky Balboa: Robert "Rocky" Balboa is the title character of the "Rocky" series.  The character was created by Sylvester Stallone, who also portrayed him in all seven "Rocky" films.  He is depicted as an everyman who started out by going the distance and overcoming obstacles that had occurred in his life and career as a professional boxer.  While he is loosely based on Chuck Wepner, a one-time boxer who fought Muhammad Ali and lost on a TKO in the 15th round, the inspiration for the name, iconography and fighting style came from boxing legend Rocky Marciano.

Houston Rockets all-time roster: The Houston Rockets are an American professional basketball team based in Houston, Texas.  The team plays in the Southwest Division of the Western Conference in National Basketball Association (NBA).  The team was established in 1967, and played in San Diego, California for four years before being moved to Houston.  In the Rockets debut season, they won only 15 games.  However, after drafting Elvin Hayes first overall in the 1969 NBA Draft, they made their first appearance in the playoffs in 1969.  After Hayes was traded, Moses Malone was acquired to replace him.  Malone won two MVPs during his time in Houston, and he led the Rockets to the conference finals in his first year with the team.  He also took the Rockets to the NBA Finals in 1981, but they were defeated in six games by the Boston Celtics.  In 1984, the Rockets drafted Hakeem Olajuwon, who led them to the 1986 Finals in his second year, where they lost again to Boston.  In the next seven seasons, they lost in the first round of the playoffs five times.  They won their first NBA championship in 1994, led by Olajuwon, who won Finals MVP.  They repeated as champions the next year, and Olajuwon won Finals MVP once again.  To date, the Rockets have not advanced to the finals again.  The Rockets missed the playoffs from 1999–2003, and did not make the playoffs again until after they drafted Yao Ming in 2002.  Since then, the Rockets have had a winning season in all but two of the next 14 seasons and, led by James Harden, advanced to the conference finals in 2015.

Emmanuel Lucero: Emmanuel Lucero born November 3, 1978 in Mexico City, Distrito Federal, Mexico) is a current Mexican professional Super Featherweight boxer.  He is best known for his fight against Manny Pacquiao for the IBF super bantamweight title on 26 July 2003 at the Olympic Auditorium, Los Angeles, California.  The fight went three rounds when Manny Pacquiao won the fight by TKO.  He has a current record of won 24 (KO 14) lost 5 (KO 4) drawn 1 from thirty fights.  His nickname is The Butcher or the El Carnicero and currently his residence is Mexico.

George Foreman: George Edward Foreman (born January 10, 1949) is an American former professional boxer who competed from 1969 to 1977, and from 1987 to 1997.  Nicknamed "Big George", he is a two-time world heavyweight champion and an Olympic gold medalist.  Outside the sport he is an ordained minister, author, and entrepreneur.

Luis Concepción: Luis Concepción (born October 6, 1985 as Luis Miguel Concepción Montiel) is a professional boxer from Panama City.  His nickname is "El Nica".  The southpaw resides in the capital of Panama.  His professional record includes 24 fights: 22 wins (17 knockouts), and 2 losses.  He won the WBA Interim Flyweight Title by TKO against Mexican Omar Salado on September 5, 2009.  He was promoted to full WBA Champion after reigning Champion Daiki Kameda relinquished his title in 2011.  He lost the WBA Flyweight Title to Hernan Márquez by TKO in the 11th round.

Abel Kay: Abel Kay (1911–2004) was an Australian tennis player.  He was renowned for his fitness and played several sports to a good standard.  As a boxer he was Victorian amateur welterweight champion in 1931.  He also played football and water polo.  Entering the Australian Championships for the first time in 1933, Kay lost in round one to Wilmer Allison.  The following year he lost his first match to Harry Lee in five sets.  In 1935 he lost his first match to Enrique Maier.  In 1936 Kay reached the semi finals (beating Don Turnbull before losing to Jack Crawford).  The following year he lost to Vivian McGrath in the quarter finals.  In 1939 he lost in round one to James Gilchrist.

Wayne Elcock: Wayne Elcock (born 12 February 1974) is a British former professional boxer.  Who was managed by Frank Maloney at the start of his career and promoted by Panix promotions before moving after 2 winning fights to Frank Warren, then later to Mick Hennessy.  Elcock was trained in Leicester to begin with by Jez brogan, before moving to London to be trained by both Frank Maloney and Alan Smith, along with several visits to america to build on his skills, where Wayne worked with Goody Petronelli the trainer of former world champions Marvelous Marvin Hagler and Steve Collins at his famous Brockton gym.  Wayne came back to his home town to team up with Birmingham's most successful boxing trainers brothers Paddy & Tommy Lynch.  Knocking out fellow contender Darren Rhodes in 1 minute 30 seconds in Elcocks homecoming and first ever fight with the Lynch brothers in Birmingham at a sold out Aston Events Centre, this setting up his first attempt at the prestigious British title Lonsdale Belt against Plymouth's Scott Dann (boxer) in the first British title fight to ever be scored by three judges, after defeat Wayne bounced back with two back to back knockout victories one of them a British title eliminator winning by TKO against Scotland's Lawrence Murphy, who was the only other boxer to have beaten Elcock, In Wayne's next contest he faced the English champion Steven Bendall who was to be yet another stopped, but this time over eight punishing rounds and setting up his next contest where he would become the first British boxer to beat long standing British champion Howard Eastman to win the coveted Lonsdale Belt in 2007, Elcock also won the Commonwealth title and the minor WBU World Middleweight title becoming the first Birmingham born fighter to ever hold a version of a World title.  Elcock challenged for the IBF middleweight title against the unbeaten World champion Arthur Abraham on 8 December 2007, losing by a fifth round knockout.  Wayne bounced back from his world title attempt defending the lonsdale belt with a TKO win against local Dudley rival Darren McDermott, before losing the next defence to fellow Birmingham fighter Matthew Macklin in the Battle of Brum Elcock retired at the age of 36 in 2009 to concentrate fully on his other business matters and today Wayne can be found mentoring in schools and behind the counter at Mad Dog's Boxing shop in Boldmere, Birmingham, as well as coaching in the evening at the multi award winning company Wayne Elcock's Box Clever and at his own amateur boxing club Wayne Elcock's Boxing Academy, located in Chelmsley Wood, not far from where he grew up.

Charles Sieger: Charles Sieger was an Italian-American boxer who fought in the early 1900s.  Fighting out of Hoboken, New Jersey, he was not particularly known for his fighting skills, but had tremendous strength and was able to withstand brutal punishment in the ring, which earned him the nickname "The Iron Man."  On November 14, 1902 he fought Joe Gans for the World Lightweight Championship in Baltimore, but lost by TKO in the 14th round.  One month later on December 31 he fought Gans again in Boston, this time with the match ending in a pre-arranged draw.  In 1915, Sieger ran for mayor of Hoboken, but lost the election.

Algirdas Šocikas: Algirdas Šocikas (14 May 1928 – 21 November 2012) was a Lithuanian amateur heavyweight boxer who won the European title in 1953 and 1955 and finished fifth at the 1952 Olympics.  He won six Soviet (1950–1954, 1956), six Lithuanian (1947–1948, 1951–1953, 1956) and three Baltic championships (1948, 1950, 1952).  After retiring in 1957 he worked as a boxing coach in Kaunas and raised the Olympic medalists Ričardas Tamulis and Jonas Čepulis, among others.  He died in Kaunas, aged 84, and was buried in Petrašiūnai Cemetery.

Supporting paragraphs: Jonas Čepulis George Foreman
Answer: Big George