Thomaz Koch (born May 11, 1945 in Porto Alegre), is a left-handed former tennis player from Brazil, who won two gold medals in the men's tennis competition at the 1967 Pan American Games.

Koch achieved a career-high singles ranking of World Number 24 which he reached on December 20, 1974. He reached his career-high doubles ranking on January 3, 1983, when he became World Number 60.

Marcos Diniz Daniel (born on July 4, 1978 in Passo Fundo, Rio Grande do Sul) is a professional tennis player from Brazil who turned professional in 1997. The right-hander reached his highest singles ATP-ranking on September 14, 2009, when he became World No. 56. He is coached by his brother, Márcio.

Marcos Daniel's brother owns an academy for developing young tennis players, called Daniel Tennis Center where Marcos Daniel used to work as a ball catcher. He started playing youth tournaments at age 5. When he was 12, representing this academy, he reached his first final but he did not succeed in winning the title.

In August 2009, he reached the semi-finals of the ATP Gstaad tournament. He also reached the semi-finals there in 2006.

He qualified for the 2009 French Open and lost in the first round to Rafael Nadal after giving a strong performance, 5–7 4–6 3–6.

Fernando Ariel Meligeni (born April 12, 1971), nicknamed Fininho (Portuguese for little thin) is a former professional tennis player from Brazil.

Meligeni was born in Buenos Aires, Argentina, but moved with his family to São Paulo, Brazil, when he was four years old. As a junior, he won the traditional Orange Bowl in 1989, finishing no. 3 in the world junior rankings in the same year. Meligeni turned professional in 1990, opting for the Brazilian nationality.

He won his first ATP Tour singles title in 1995, at the Swedish Open in Båstad, Sweden. In 1996, Meligeni won his second ATP Tour singles title in Pinehurst, North Carolina, defeating veteran Swede Mats Wilander in the final.

At the 1996 Summer Olympics in Atlanta, Georgia he reached the semi finals, where he was defeated by Spain's Sergi Bruguera. In the Bronze medal play-off's, he lost to Leander Paes of India.

In 1998, Meligeni won his third and last ATP Tour singles title in Prague, Czech Republic, beating then world no. 6 Yevgeny Kafelnikov from Russia on the way.

Brad Cohen is an American motivational speaker and an award-winning teacher and author who has severe Tourette syndrome (TS). Cohen described his experiences growing up with the condition in his book, Front of the Class: How Tourette Syndrome Made Me the Teacher I Never Had, co-authored with Lisa Wysocky. The book has been made into a Hallmark Hall of Fame TV movie titled Front of the Class.

During his childhood, Cohen was accused of being a troublemaker in school and was punished by his teachers for the tics and noises caused by TS. He decided to "become the teacher that he never had". After he graduated and received his teaching certificate, 24 elementary schools rejected him before he was hired at Mountain View Elementary School in Cobb County, Georgia. As a new teacher, he was named Georgia's First Class Teacher of the Year.

Cohen grew up in St. Louis, Missouri, in a Jewish family. His parents divorced during his early childhood. Cohen barked and twitched constantly during his waking hours, and would knock his knee against the inside of the car door. Someone asked his mother once if she had considered an exorcist. His mother was compassionate, but his father did not understand why his son did the things he did, often getting frustrated and punishing him for making noises or other physical tics.