Fabio Fognini was the defending champion, but lost in the semifinals to Roberto Bautista Agut.
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Paul Annacone (born March 20, 1963) is an American former touring professional tennis player and current tennis coach.
 He is the former coach of open-era leader in Grand Slams Roger Federer and former World No. 1 Pete Sampras.
 Annacone is currently a coach at ProTennisCoach.com and a commentator at Tennis Channel
Paul Annacone and John Fitzgerald were the defending champions but they competed with different partners that year, Annacone with Christo van Rensburg and Fitzgerald with Anders Järryd.
Fabio Fognini was the defending champion, but chose not to play.
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.
Paul Annacone and Christo van Rensburg were the defending champions.
 Annacone participated with John Fitzgerald, and lost in the quarterfinals to Scott Davis and David Pate, while Van Rensburg played with Kevin Curren, and lost in the semifinals to Grant Connell and Glenn Michibata.
<br>Rick Leach and Jim Pugh defeated Connell and Michibata 3–6, 6–4, 6–2, in the final.
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.
Fabio Fognini chose to not defend his 2009 title.
The 1993 Volvo International was a tennis tournament played on outdoor hard courts at the Cullman-Heyman Tennis Center in New Haven, Connecticut, United States and was part of the Championship Series of the 1993 ATP Tour.
 The tournament ran from August 16 through August 23, 1993.
 Kelly Jones and Rick Leach were the defending champions but only Jones competed that year with Paul Annacone.
 Annacone and Jones lost in the semifinals to Cyril Suk and Daniel Vacek.
 Suk and Vacek won in the final 7–5, 6–4 against Steve DeVries and David Macpherson.
Paul Annacone and Christo van Rensburg were the defending champions.
 Annacone competed alongside Kelly Evernden but lost in the semifinals, while van Rensburg played with Kevin Curren and lost in the quarterfinals.
<br>Darren Cahill and Mark Kratzmann won the title, defeating Udo Riglewski and Michael Stich 7–5, 6–2, in the final.

Question: Athletes Paul Annacone and Fabio Fognini both play what type of sport?
Answer: tennis