In 2013 elected into International Tennis Hall of Fame<ref>[http://www.atpworldtour.com/News/Tennis/2013/07/28/Newport-Hall-Of-Fame-Drysdale-Pasarell-Tiriac.aspx Drysdale, Pasarell, Tiriac inducted into Hall of Fame], atpworldtour.com, 2013-07-28</ref>. His nickname is 'Count Dracula' because of he was born in [[Transylvania]]<ref>[http://thebiofile.com/2010/05/biofile-with-ion-tiriac/ Biofile with Ion Tiriac], thebiofile.com, 2010-05-13</ref>.
In 1970 he won Roland Garros in doubles together with [[Ilie Nastase]]. They defeated [[Arthur Ashe]] and [[Charlie Pasarell]] in final 6–2, 6–4, 6–3<ref>[http://www.atpworldtour.com/Share/Event-Draws.aspx?Year=1970&EventId=520&Draw=md Roland Garros 1970 – Men's Doubles]</ref>.
He was the president of Romanian Olympic Committee from 1998 to 2004<ref>[http://web.archive.org/web/20130101204832/http://www.cosr.ro/fosti_presedinti.html Fosti presedinti], cosr.ro</ref>. He served as a coach for players such as [[Goran Ivanišević]]<ref name="tiriacholdings">[http://www.tiriacholdings.ro/en/about-us About us: Who is Ion Tiriac], tiriacholdings.ro</ref><ref>[http://jurnalul.ro/special-jurnalul/capitalistul-socialist-ion-tiriac-64327.html Capitalistul socialist: Ion Tiriac], jurnalul.ro, 2004-07-26</ref>, [[Marat Safin]]<ref name="tiriacholdings"/><ref>[http://sportsillustrated.cnn.com/2009/writers/sl_price/09/02/marat.safin/index.html Marat Safin will be missed when he retires from tennis], sportsillustrated.cnn.com, 2009-09-02</ref>, [[Dinara Safina]] or [[Virginia Ruzici]]<ref name="tiriacholdings"/>. He managed [[Boris Becker]] from 1985 to 1994. In this time German player won five Grand Slam tournaments<ref>[http://www.romania-insider.com/romanias-famous-tennis-player-ion-tiriac-included-in-the-international-tennis-hall-of-fame/103814/ Romania's famous tennis player Ion Tiriac included in the International Tennis Hall of Fame], romaniainsider.com, 2013-07-15</ref>.