Question: Thomaz Koch and Sébastien Lareau, have which occupation in common?

full_context: Document 1: Carlos Fernandes (tennis): Carlos Fernandes (1936-) is a retired Brazilian tennis player. He had a good all-round game with excellent passing shots and moved fast around the court. Fernandes had a reputation for being a charismatic ladies man. He later became a coach. He made his Grand Slam debut at Wimbledon 1957, losing in the opening round to Jorgen Ulrich. At Roland Garros in 1958, Fernandes lost in round one to Pierre Darmon. At Wimbledon he lost in round one to Butch Buchholz. At 1959 French Open, Fernandes lost in round three to Jacques Brichant.At Wimbledon he lost in round two to Neale Fraser. At French Open 1960, Fernandes lost in round three to Bobby Wilson and at Wimbledon lost in round two to Wolfgang Stuck. At 1961 French Open, Fernandes achieved his best Grand Slam singles result by beating Pierre Darmon and Bob Hewitt before losing to Jan-Erik Lundquist in the quarter finals. He lost in round two of Wimbledon to Wilson. At Roland Garros 1962, Fernandes lost to Lundquist in round two. At Wimbledon he lost in round one to Neale Fraser's brother John. At 1963 French Open he lost in round one to Christian Duxin. In round one of Wimbledon he led a young Arthur Ashe by two sets to 0, but lost in five sets. At Wimbledon 1964 he lost in round two to Gene Scott. An ankle injury in 1964 took its' toll and Fernandes played less after that. As Open tennis arrived, Fernandes was reaching the end of his career. He lost in round one of 1968 French Open to Bernard Montrenaud. At Wimbledon he lost in round one to Mike Sangster.
Document 2: 2000 Stella Artois Championships – Doubles: Sébastien Lareau and Alex O'Brien were the defending champions but they competed with different partners that year, Lareau with Daniel Nestor and O'Brien with Jared Palmer.
Document 3: 2000 Paris Masters – Doubles: Sébastien Lareau and Alex O'Brien were the defending champions. Lareau did not participate this year. O'Brien partnered Jared Palmer, losing in the semifinals.
Document 4: 2001 Canada Masters – Doubles: The 2001 Canada Masters – Doubles was the men's doubles event of the one hundred and twelfth edition of the Canada Masters; a WTA Tier I tournament and the most prestigious men's tennis tournament held in Canada. Sébastien Lareau and Daniel Nestor were the defending champions but they competed with different partners that year, Lareau with Justin Gimelstob and Nestor with Sandon Stolle. Gimelstob and Lareau lost in the first round to Mark Knowles and Brian MacPhie, as did Nestor and Stolle to Jan-Michael Gambill and Simon Larose. Jiří Novák and David Rikl won in the final 6–4, 3–6, 6–3 against Donald Johnson and Jared Palmer.
Document 5: Thomaz Koch: Thomaz Koch (born May 11, 1945 in Porto Alegre), is a left-handed former tennis player from Brazil, who was a quarter-finalist at the French Open, Wimbledon and the U.S. National Championships.
Document 6: Thomas Emmrich: Thomas Emmrich (born 21 July 1953) is a former tennis player for East Germany. Between 1970 and 1988, Emmrich won 47 German Democratic Republic (GDR) titles (16 singles and 31 in the doubles and mixed). Unfortunately, he entered the tennis scene after the GDR had decided to promote only those sports which were relevant for the Olympics’ medals table. Thus, he was barred from international competitions outside the Eastern bloc countries and had to keep the status as an amateur. However, he gained some points at an ATP tournament in Sofia as GDR functionaries had not noticed that it had become part of the ATP tour. After this tournament, the ATP ranked him number 482—the only entry of a GDR tennis player in the ATP rankings.
Document 7: Andrés Gómez: Andrés Gómez Santos (born February 27, 1960 in Guayaquil, Ecuador) is an Ecuadorian former professional tennis player. He won the Men's Singles title at the French Open in 1990.
Document 8: Tony Roche: Anthony Dalton Roche, AO MBE (born 17 May 1945) is a former professional Australian tennis player, native of Tarcutta. He played junior tennis in the New South Wales regional city of Wagga Wagga. He won one Grand Slam singles title and thirteen Grand Slam doubles titles, and was ranked as high as World No. 2 by Lance Tingay of "The Daily Telegraph" in 1969. He also coached multi-Grand Slam winning World No. 1s, Ivan Lendl, Patrick Rafter, Roger Federer, Lleyton Hewitt and former World No. 4, Jelena Dokic.
Document 9: Guillermo Vilas: Guillermo Vilas (] ; born 17 August 1952) is a retired professional tennis player from Argentina, N°1 of the Grand Prix tennis circuit's Season in 1974, 1975 and 1977, who won four majors, seven Grand Prix Super Series titles and 62 ATP titles. He was inducted into the International Tennis Hall of Fame in 1991. Known for his prolific match play, especially on clay, he became the second man to win more than 900 matches in the Open Era, and his number of match wins on clay are by far the most of the Era. His peak was the 1977 season during which he won two major titles (both on clay), had two long match win streaks of 46 all-surface and 53 on clay, and finished with an Open Era record of match wins. In 2005, Tennis magazine ranked him as the 15th-best male player of the preceding 40 years. He also popularized the between-the-legs tweener shot, also known as the "Gran Willy" in his honor.
Document 10: Félix Auger-Aliassime: Félix Auger-Aliassime (born August 8, 2000) is a Canadian professional tennis player. He reached a career high ATP singles ranking of No. 161 on September 18, 2017 and a career high ITF junior ranking of No. 2 on June 6, 2016. He is the youngest player ever to qualify and to win a main draw match on the ATP Challenger Tour. With his titles at the Open Sopra Steria de Lyon in June 2017 and the Copa Sevilla in September 2017, he became the seventh youngest player in history (16 years, 10 months) to win an ATP Challenger title and the second youngest to win multiple ATP Challenger titles. Auger-Aliassime won the 2016 US Open junior singles title and the 2015 US Open junior doubles title with compatriot Denis Shapovalov.
Document 11: 1999 Legg Mason Tennis Classic – Doubles: Grant Stafford and Kevin Ullyett were the defending champions. Stafford chose not to participate this year. Ullyett partnered with Piet Norval but lost in the semifinals to the eventual champions Justin Gimelstob and Sébastien Lareau. <BR>Justin Gimelstob and Sébastien Lareau won in the final over David Adams and John-Laffnie de Jager, 7–5, 7–6.
Document 12: Sébastien Lareau: Sébastien Lareau (born April 27, 1973 in Montreal, Quebec) is a retired professional tennis player. He became the first Canadian to win a Grand Slam title by winning the 1999 U.S. Open Men's Doubles with his American partner Alex O'Brien.
Document 13: Marcello del Bello: Marcello del Bello (born 25 January 1921) is a former Italian tennis player. He played Davis Cup and often played doubles with Giovanni Cucelli. Del Bello and his younger brother Rolando were introduced to the game at a young age, as their father worked at a tennis club. Both became tour players. Marcello made his Grand Slam debut at Wimbledon in 1947, losing in round one to Enrique Morea. At Roland Garros (held after Wimbledon for the last time), Del Bello lost in round three to Philippe Washer. At Roland Garros in 1948, Del Bello reached the quarter finals, where he lost to Budge Patty. At Wimbledon he lost to Frank Sedgman in round two. At Wimbledon 1949, Del Bello lost in round three to Nigel Cockburn. At the U. S. Championships, he lost in round two to James Brink. At Roland Garros in 1950, Del Bello lost in round three to Ken McGregor. By 1951 Del Bello's career was beginning to decline and he lost in round one of the French and Wimbledon. The following year he lost in round two at the French and Wimbledon. At Roland Garros in 1953, Del Bello lost in round one to Ian Ayre. In 1955, Del Bello turned professional.
Document 14: 1998 Advanta Championships – Doubles: Sébastien Lareau and Alex O'Brien were the defending champions, but O'Brien did not participate this year. Lareau partnered Jeff Tarango, losing in the first round.
Document 15: Tom Okker: Thomas Samuel Okker (born 22 February 1944) is a former Dutch tennis player. He was ranked among the world's top 10 singles players for seven consecutive years, 1968–74, reaching a career high of World No. 3 in 1969. He also was ranked World No. 1 in doubles in 1969.
ground_truth: tennis player