The Gerry Weber Open is a tennis tournament held in Halle, Germany. Held since 1993, the tournament
is played on outdoor grass courts and is a part of the ATP World Tour 250 series on the ATP Tour. The
Centre Court has 12,300 seats and a retractable roof which can be closed in 88 seconds so that tennis
games can continue with a closed roof when it begins to rain. Tommy Haas delighted the home fans
after defeating Roger Federer in the finals in 2012.