1991 Athens Open
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The 1991 Athens Open was a tennis tournament played on outdoor clay courts in Athens in Greece that was part of the World Series of the 1991 ATP Tour. It was held from September 30 through October 7, 1991.
Champions
Men's Singles
Sergi Bruguera defeated Jordi Arrese 7–5, 6–3
- It was Bruguera's 4th title of the year and the 6th of his career.
Men's Doubles
Jacco Eltingh / Mark Koevermans defeated Menno Oosting / Olli Rahnasto 5–7, 7–6, 7–5
- It was Eltingh's 2nd title of the year and the 2nd of his career. It was Koevermans' 1st title of the year and the 2nd of his career.