1991 Geneva Open

The 1991 Geneva Open was a men's tennis tournament played on clay courts that was part of the World Series of the 1991 ATP Tour. It was the 12th edition of the tournament and was played at Geneva, Switzerland from 9 September through 16 September 1991. Unseeded Thomas Muster won the singles title.^[3]

1991 Geneva Open
Date	9–16 September
Edition	12th
Category	World Series
Draw	32S / 16D
Prize money	$225,000
Surface	Clay / outdoor
Location	Geneva, Switzerland
Champions
Singles
Thomas Muster[1]
Doubles
Sergi Bruguera / Marc Rosset[2]

Finals

Singles

Main article: 1991 Geneva Open – Singles

Thomas Muster defeated Horst Skoff 6–2, 6–4

• It was Muster's 2nd title of the year and the 11th of his career.

Doubles

Main article: 1991 Geneva Open – Doubles

Sergi Bruguera / Marc Rosset defeated Per Henricsson / Ola Jonsson 3–6, 6–3, 6–2

• It was Bruguera's 3rd title of the year and the 5th of his career. It was Rosset's only title of the year and the 3rd of his career.