Velikton Innokentyevich Barannikov (Russian: Виликтон Иннокентьевич Баранников ; 4 July 1938 – 29 November 2007) was a Soviet boxer who competed in the lightweight category at the 1960 and 1964 Summer Olympics.
 In 1960 he lost to Abel Laudonio in the quarter-final.
 In 1964 he progressed to the final, where he lost to Józef Grudzień.
 He won a European title in 1965, and finished his career with a record of 228 wins out of 275 bouts.
 Despite his international success he never won a national title, finishing in second place in 1960–62 and 1965.
Abel Ricardo Laudonio (30 August 1938 – 12 August 2014) was an Argentinean lightweight boxer.
 As an amateur he competed in the 1956 and 1960 Olympics and won a bronze medal in the lightweight division in 1960.
 In 1961 he turned professional and in 1965 challenged Nicolino Locche for the South American lightweight title, but lost by decision.
 Laudonio retired the same year with a record of 48 wins (37 by knockout), 6 losses, and 2 draws.
 He later ran a fitness center in Buenos Aires.
Carl Crook (born 10 November 1963 in Bolton) is an English amateur lightweight and professional light/light welterweight boxer of the 1980s and 1990s, who as an amateur was runner-up in the 1985 Amateur Boxing Association of England (ABAE) lightweight title, against Edmond McAuley (Hogarth ABC), boxing out of Chorley ABC, and as a professional won the British Boxing Board of Control (BBBofC) Central Area lightweight title, BBBofC British lightweight title, and Commonwealth lightweight title, and was a challenger for the EBU (European) lightweight title against Antonio Renzo, and Jean Baptiste Mendy, his professional fighting weight varied from 132 lb , i.e. lightweight to 137 lb , i.e. light welterweight.
Bobby "Viper" Vanzie ( (1975--) 15 1975 (age (2017)-(1975)-((11)<(08)or(11)==(08)and(30)<(15)) ) ) born in Bradford is an English professional light/light welter/welterweight boxer of the 1990s and 2000s, who won the British Boxing Board of Control (BBBofC) Central Area lightweight title, BBBofC British lightweight title, and Commonwealth lightweight title, and was a challenger for the World Boxing Organization (WBO) Inter-Continental lightweight title against Yuri Ramanau, and BBBofC British lightweight title against Graham Earl, his professional fighting weight varied from 133 lb , i.e. lightweight to 144 lb , i.e. welterweight.
Richard Commey (born October 3, 1987) is a Ghanaian professional Lightweight boxer who has won the Ghanaian lightweight title, International Boxing Federation (IBF) Continental Africa lightweight title, African Boxing Union (ABU) lightweight title, International Boxing Federation (IBF) Inter-Continental lightweight title, and Commonwealth lightweight title.
William "Billy" 'The Kid' Irwin ( (1968--) 20 1968 (age (2017)-(1968)-((11)<(05)or(11)==(05)and(29)<(20)) ) ) born Niagara Falls, Ontario, is a retired Canadian amateur lightweight and professional light/light welter/welterweight boxer of the 1990s and 2000s who as an amateur won a bronze medal in the Boxing at the 1991 Pan American Games in Havana, Cuba, losing to eventual silver medal winner Patrice Brooks of the United States, represented Canada at the 1991 World Amateur Boxing Championships in Sydney, Australia losing to Julien Lorcy of France, and represented Canada at the 1992 Summer Olympics in Barcelona, Spain, he was stopped in the second round of the lightweight division (– 60 kg) by Ronald Chavez of the Philippines, and as a professional won the Canadian Professional Boxing Council (CPBC) lightweight title, Canada lightweight title, International Boxing Organization (IBO) lightweight title, World Boxing Council (WBC) Continental Americas lightweight title, and Commonwealth lightweight title, and was a challenger for the International Boxing Federation (IBF) lightweight title against Paul Spadafora, and World Boxing Association (WBA) World lightweight title against Juan Díaz, his professional fighting weight varied from 133+1/2 lb , i.e. lightweight to 142 lb , i.e. welterweight.
 He retired from boxing after losing to Juan Diaz in 2005, his second unsuccessful world title challenge.
 His final record was 42(30)–6–0.
Mzonke Fana (born 29 October 1973 in Cape Town, South Africa) is a professional boxer in the junior lightweight (130 lb) division.
 Known as ""The Rose of Khayelitsha"", he was a virtual unknown in the boxing world until he challenged and defeated Malcolm Klassen for the IBF World Junior lightweight title in 2007.
 Prior to the victory, he was knocked out on 9 April 2005 by Marco Antonio Barrera in the second round for the WBC championship.
 He fought Paulus Moses for the WBO international lightweight title, but the fight stopped in the 4th round.
 On 7 December 2013 he fought upcoming fighter Edis Tatli for the WBA Inter-continental lightweight title at the Barona Areena in Espoo, Finland, but lost a decision.
John Murray (born 20 December 1984) is a British former professional boxer who competed from 2003 to 2014.
 He held the English lightweight title from 2007 to 2008; the British lightweight title twice, from 2008 to 2010; and the European lightweight title from 2010 to 2011.
 He also challenged once for the vacant WBA lightweight title in 2011.
 John is the brother of British former Olympian Joe Murray.
 Since retiring, Murray has opened his own gym – Murray Machines Gymnasium – in Reddish, where he trains both amateur and professional boxers.
Al Foreman (3 November 1904 in London – 23 December 1954), was a British-born boxer of the 1910s, 1920s and 1930s who in the last four years of his career won the Canadian lightweight title, British Boxing Board of Control (BBBofC) British lightweight title, and British Empire lightweight title.
 He unsuccessfully contended for the Canadian Featherweight title against Leo Roy in Montreal on May 8, 1924.
 He first took the Canadian Lightweight title against Leo "Kid" Roy in 1928, and took the BBBofC British Lightweight Title on February 21, 1930, in a first-round knockout of reigning champion Fred Webster in the Whitechapel District of London.
 He was an amazingly durable fighter having few if any knockouts counted against him in his career, yet knocking out an exceptionally high percentage of his opponents.
Nicolino Locche (September 2, 1939 – September 7, 2005) was an Argentine boxer from Tunuyán, Mendoza who held the World Light welterweight title from 1968 to 1972.
 Locche is often cited as one of the finest defensive boxers of all time.

Question: which Argentine boxer did Abel Laudonio challenged for the South American lightweight title
Answer: Nicolino Locche