1991 ATP German Open
# 1991 ATP German Open

The 1991 German Open was a men's tennis tournament played on outdoor clay courts. It was the 85th edition of the Hamburg Masters (Hamburg Masters), and was part of the ATP Super 9 of the 1991 ATP Tour. It took place at the Rothenbaum Tennis Center in Hamburg, Germany, from 6 May until 13 May 1991. Karel Nováček, who was seeded 13th, won the singles title.

## Finals

### Singles

Karel Nováček defeated Magnus Gustafsson, 6–3, 6–3, 5–7, 0–6, 6–1

* It was Karel Nováček's 2nd title of the year, and his 5th overall. It was his 1st Masters title of the year, and overall.

### Doubles

Sergio Casal / Emilio Sánchez defeated Cássio Motta / Danie Visser, 4–6, 6–3, 6–2

