Other seeded players were 2007 St. Petersburg finalist Fernando Verdasco, Doha and Sydney quarterfinalist Agustín Calleri, Óscar Hernández, José Acasuso and Nicolás Massú.
The singles field featured ATP No. 5, 2007 Tennis Masters Cup runner-up and Australian Open quarterfinalist David Ferrer, Viña del Mar runner-up Juan Mónaco, and 2007 Metz titlist Tommy Robredo.
The singles field featured Viña del Mar champion Fernando González, former World No. 1 and 2007 Cincinnati Masters semifinalist Lleyton Hewitt, and Marseille semifinalist Marcos Baghdatis.
2008 | 2008 Summer Olympics | Australian Open | French Open | 2008 in music | Open University | open source | United States presidential election, 2008 | U.S. Open | Arena Football League (1987–2008) | UEFA Euro 2008 | Eurovision Song Contest 2008 | Wacken Open Air | 2008 Sichuan earthquake | The Open Championship | Barack Obama presidential campaign, 2008 | 2008 World Series of Poker | John McCain presidential campaign, 2008 | Canadian federal election, 2008 | U.S. Open (tennis) | 2008 Commonwealth Youth Games | All England Open Badminton Championships | 2008 Rugby League World Cup | U.S. Open (golf) | Open Source | Open-pit mining | 2008 Summer Paralympics | 2008 in film | 2006 Australian Open | Open Software Foundation |
The announced draw was led by Marseille semifinalist Paul-Henri Mathieu, Viña del Mar champion Fernando González, Auckland winner and BMW Open defending champion Philipp Kohlschreiber.