Question: "The Clutch" Sammy Angott and former world champion Henry Armstrong both held which athletic occupation?
Context: Frankie Klick (May 5, 1907 – May 18, 1982) was an American boxer who became a World Jr.  Lightweight boxing champion when he defeated "Kid Chocolate", on December 25, 1933 at the arena in Philadelphia, Pennsylvania, in a seventh-round technical knockout.  In his career he fought the exceptional champions Henry Armstrong once, Barney Ross twice and Tony Canzoneri four times.  His managers were Joe Doran and Ray Carlin. Eric Albarracin (born c. 1977) is a retired American wrestler who won silver medals in the freestyle 54 kg division at the Pan American Championships and at the 2000 Military World Wrestling Championships.  Currently he coaches professional mixed martial arts competitors from Brazil, and in this capacity participated in and .  Before that Albarracin trained the Olympic champion Henry Cejudo. Rowe Hessler (born on February 27, 1991 on Long Island, New York) is a two-time former speedcubing U.S. Champion and runner-up World Champion as of 2011.  He held the North American record for the average of 5 Rubik's Cube solves almost continuously from 2009 to 2014, during which time the record dropped from 11.11 seconds to 8.27 seconds.  As of May 2014, his average of 8.27 seconds ranks him eleventh in the world.  Hessler is also known for his expertise in the 2x2x2 event, having set the former world record in 2009 with an average time of 2.45 seconds.  In October 2009, he attended the World Championships in Germany and was crowned World Champion in the 2x2x2 event. Anatoly Yevgenyevich Karpov (Russian: Анато́лий Евге́ньевич Ка́рпов ; born May 23, 1951) is a Russian chess grandmaster and former World Champion.  He was the official world champion from 1975 to 1985 when he was defeated by Garry Kasparov.  He played three matches against Kasparov for the title from 1986 to 1990, before becoming FIDE World Champion once again after Kasparov broke away from FIDE in 1993.  He held the title until 1999, when he resigned his title in protest against FIDE's new world championship rules.  For his decades-long standing among the world's elite, Karpov is considered by many to be one of the greatest players of all time. Nathan "Carnage" Corbett (born (1979--)23 1979 ) is a retired former Australian 11-time Muay Thai World Champion, hailing out of the Urban Fight Gym, Gold Coast.  He was the WMC Muaythai Cruiserweight World champion, the K-1 Scandinavia 2007 tournament champion, and former World Kickboxing Network (WKN) Muay Thai Heavyweight World Champion.  Former 10-time Muay Thai World Champion and Australian legend John Wayne Parr respectfully refers to him as "the elbow master". Rebecca Jayne Romero, MBE (born 24 January 1980) is an English sportswoman, a former World Champion and Olympic Games silver medallist at rowing, and a former World champion and former Olympic champion track cyclist. Frederick Steven "Freddie" Roach (born March 5, 1960) is an American boxing trainer and former professional boxer.  Roach is widely regarded as one of the best boxing trainers of all time.  He is the enduring boxing coach of the eight-division world champion Manny Pacquiao, five-time and four-division World Champion Miguel Cotto, former WBC Middleweight Champion Julio César Chávez, Jr., defensive master and three-time world champion James Toney, former UFC Welterweight Champion Georges St-Pierre, as well as top prospects Jose Benavidez, Peter Quillin, and Vanes Martirosyan.  Roach was the trainer of former two-time world champion and notable women's champion Lucia Rijker.  He has also trained former junior welterweight champion Amir Khan. Sammy Angott (January 17, 1915 – October 22, 1980) was born Salvatore Engotti in a Pittsburgh area town in Pennsylvania.  He was known as a clever boxer who liked to follow up a clean punch by grabbing his opponent, causing him to be known as "The Clutch."  In his career, Angott met the best fighters in the welterweight and lightweight divisions.  These included Sugar Ray Robinson, Bob Montgomery, Beau Jack, Fritzie Zivic, Henry Armstrong, Redtop Davis, Sonny Boy West, and Ike Williams.  His manager was Charlie Jones. Henry Jackson Jr. (December 12, 1912 – October 24, 1988) was an American professional boxer and a world boxing champion who fought under the name Henry Armstrong. Wesley "Wes" Ramey (September 17, 1909 – March 10, 1997) was an American boxer who was dubbed the "Uncrowned Champion of the Lightweights".  Although he was ranked as a top-10 lightweight contender for 10 consecutive years, he was never given a chance to fight for a world title.  Over the course of his career he defeated Hall of Famers Tony Canzoneri, Benny Bass, Lew Jenkins and Cocoa Kid.  He also faced the likes of Sammy Angott and Pedro Montanez in defeat.
Answer: professional boxer