Fabio Fognini (] ; born 24 May 1987) is an Italian professional tennis player who is currently ranked world No. 29 in men's singles by the Association of Tennis Professionals (ATP) and the current Italian No. 1.
 His career-high singles ranking is world No. 13, achieved in March 2014, and world No. 7 in doubles, achieved in July 2015.
 Fognini's most successful surface is red clay, upon which he won his four ATP singles titles in Stuttgart, Hamburg, Viña del Mar and Umag, reached the quarterfinals of the 2011 French Open and the semifinals of the 2013 Monte-Carlo Masters.
 Together with Simone Bolelli, Fognini won the 2015 Australian Open doubles event, becoming the first all Italian men's pair to win a Grand Slam title in the Open era.
Adam Pavlásek (born 8 October 1994) is a tennis player playing on the ATP Challenger Tour from the Czech Republic.
 He reached his career-high ATP singles ranking of World No. 72 in January 2017.
 At the start of 2015, Pavlásek replaced injured countryman Radek Štěpánek in the Hopman Cup, playing alongside Lucie Šafářová.
 He made a name for himself by defeating world number 20 Fabio Fognini of Italy, Pavlásek's first ever win over a top 20 player.
The 2013 International German Open (also known as the bet–at–home Open – German Tennis Championships 2013 for sponsorship reasons) was a men's tennis tournament played on outdoor red clay courts.
 It was the 107th edition of the event known that year as the International German Open and was part of the ATP World Tour 500 series of the 2013 ATP World Tour.
 It took place at the Am Rothenbaum in Hamburg, Germany, from 14 July through 22 July 2013.
 Twelfth-seeded Fabio Fognini won the singles title.
Bob Ryland (born 1920) is an American former tennis player and coach who is known for being the first African-American to play professional tennis.
 Ryland has coached some of the world’s top-ranked professionals, including; Harold Solomon, Renee Blount, Leslie Allen, Arthur Ashe, Bruce Foxworth, Venus Williams and Serena Williams.
 Ryland has also taught and coached at clubs in Bermuda, Puerto Rico, St. Alban’s Tennis Club in Washington, D.C. and the Mid-Town Tennis Club in Manhattan.
 Ryland was inducted into the Wayne State University Athletic Hall of Fame (1991), Black Tennis Hall of Fame (2009), and the Eastern Tennis Hall of Fame in 2002, where he also received a Lifetime Achievement Award in 2012.
Jimmie McDaniel was an American tennis player.
 He is said to be the greatest black tennis player in the era before World War II.
 He was a four time American Tennis Association singles champion.
 He was said to be the "e greatest black player of the pre-war (WWII) era."
Dr Sylvester B Smith was a black tennis player.
 He won the 1919 ATA Championships and also the Penn Tennis Open Championship.
Simone Bolelli (born 8 October 1985; ] ) is an Italian professional tennis player.
 Bolelli is a Grand Slam champion since he won the 2015 Australian Open doubles event with Fabio Fognini, becoming the first all Italian men's pair to win a Grand Slam title in the Open Era.
Byron Black (born 6 October 1969 in Harare, Zimbabwe) is a former touring professional tennis and Davis Cup player for Zimbabwe.
Paolo Lorenzi (] ; born 15 December 1981 in Rome, Italy) is an Italian professional tennis player, and current Italian No. 2.
 His career-high singles ranking is World No. 33.
 Lorenzi is coached by Claudio Galoppini.
 On August 1, 2016 he overtook Fabio Fognini becoming the new Italian #1 in the Association of Tennis Professionals ATP Ranking at the age of 34 years old and 8 months.
Óscar Serrano Gámez (born 25 May 1978, in Barcelona, Catalonia) is a former Spanish professional male tennis player.
 Currently, as June 2010, Oscar Serrano is the coach of Fabio Fognini.

Question: Were both Fabio Fognini and Byron Black tennis player?
Answer: yes