The 2010 Gerry Weber Open was a men's tennis tournament played on outdoor grass courts. It was the 18th edition of the event known that year as the Gerry Weber Open and was part of the ATP World Tour 250 series of the 2010 ATP World Tour. It took place at the Gerry Weber Stadion in Halle, Germany, from 5 June through 13 June 2010. Eighth-seeded Lleyton Hewitt won the singles title. He snapped a 15 match losing streak against Federer and it was Federer's first loss at Halle since 2002.[1]
See main article: 2010 Gerry Weber Open – Singles. 
Lleyton Hewitt defeated Roger Federer, 3–6, 7–6(7–4), 6–4
See main article: 2010 Gerry Weber Open – Doubles. 
Sergiy Stakhovsky' / 
Mikhail Youzhny defeated 
Martin Damm / 
Filip Polášek 4–6, 7–5, [10–7]
| Player | Nationality | Ranking* | Seeding | |
|---|---|---|---|---|
| Roger Federer | 2 | 1 | ||
| Nikolay Davydenko | 5 | 2 | ||
| Mikhail Youzhny | 14 | 3 | ||
| Juan Carlos Ferrero | 18 | 4 | ||
| Radek Štěpánek | Czech Republic | 20 | 5 | |
| Jürgen Melzer |  Austria | 27 | 6 | |
| Marcos Baghdatis |  Cyprus | 30 | 7 | |
| Lleyton Hewitt | 33 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received a lucky loser spot:
