2012 Gerry Weber Open

The 2012 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 20th edition of the event known that year as the Gerry Weber Open and is part of the ATP World Tour 250 series of the 2012 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, between 11 June and 17 June 2012. Unseeded Tommy Haas won the singles title.

Seeds

 * 1 Seedings are based on the rankings of May 28, 2012

Other entrants
The following players received wildcards into the singles main draw:
 * 🇩🇪 Dustin Brown
 * 🇩🇪 Tommy Haas
 * 🇩🇪 Philipp Petzschner

The following players received entry from the qualifying draw:
 * 🇷🇺 Konstantin Kravchuk
 * 🇺🇸 Tim Smyczek
 * 🇨🇳 Zhang Ze
 * 🇩🇪 Mischa Zverev

Withdrawals

 * 🇫🇷 Gaël Monfils (right knee injury)
 * 🇯🇵 Kei Nishikori (stomach injury)

Seeds

 * Rankings are as of May 28, 2012

Other entrants
The following pairs received wildcards into the doubles main draw:
 * Marco Chiudinelli / 🇩🇪 Mischa Zverev
 * 🇩🇪 Tommy Haas / 🇩🇪 Alexander Waske

Retirements

 * 🇪🇸 Marcel Granollers (right ankle strain)

Singles
🇩🇪 Tommy Haas defeated Roger Federer, 7–6(7–5), 6–4

Doubles
🇵🇰 Aisam-ul-Haq Qureshi / Jean-Julien Rojer defeated  Treat Conrad Huey / 🇺🇸 Scott Lipsky, 6–3, 6–4