ABN AMRO WORLD TENNIS TOURNAMENT; Rotterdam, The Netherlands; Surface: indoor hard

Seeds: Roger Federer, Tomas Berdych, Juan Martin Del Potro, Feliciano Lopez, Richard Gasquet, Alexandr Dolgopolov, Viktor Troicki, Marcel Granollers
ADHEREL
Floaters: Nicolas Mahut, Mikhail Youzhny, Nikolay Davydenko, Ivan Ljubicic, Michael Llodra, Philipp Kohlschreiber, Marcos Baghdatis

Notes: Seeds del Potro and Dolgopolov make first tournament appearances; lots of floaters causing potential opening-round nightmares, including (1) Federer vs. Mahut (winner to possibly face Youzhny), (3) del Potro vs. Llodra, (8) Granollers vs. Kohlschreiber, and second round (2) Berdych vs. Baghdatis possibility; two-time defending champ Robin Soderling out with injury; returning champs in the field are Llodra (2008), Youzhny (2007), and Federer (2005).

SAP OPEN; San Jose, Calif., USA; Surface: indoor hard

Seeds: Gael Monfils, Andy Roddick, Milos Raonic, Radek “The Worm” Stepanek, Kevin Anderson, Julien Benneteau, Donald Young, Olivier Rochus

Floaters: Xavier “X-Man” Malisse, Ryan Harrison, Grigor Dimitrov, Ryan Sweeting, Gilles Muller, “Iron” Mike Russell, Sam Querrey

Notes: Tough openers include (8) Rochus vs. Harrison (winner to meet winner of Malisse vs. (WC) Robby Ginepri, and (5) Anderson vs. Dimitrov; wildcards went to Yanks Ginepri, Steve Johnson and Jack Sock; Roddick 32-6 in San Jose, while Young is 1-3 and fellow seeds Anderson, Benneteau and Rochus make their first appearances; former champs in the field are Raonic (2010), The Worm (2009), and Roddick (2008,’05-04).

BRASIL OPEN 2012; Sao Paulo, Brazil; Surface: indoor clay

Seeds: (WC) Nicolas Almagro, Gilles Simon, Fernando Verdasco, Thomaz Bellucci, Carlos Berlocq, Juan Carlos Ferrero, Albert Montanes, Albert Ramos

Floaters: David Nalbandian, (WC) Fernando Gonzalez, Filippo Volandri

Notes: After 11 years in Costa do Sauipe the Brasil Open moves to Sao Paulo; seeds Simon and Ramos make first appearances at event; (1) Simon after a bye will likely face Nalbandian in his opener, and (7) Montanes vs. Volandri in a battle of who can’t hit out of a paper bag; other wildcards went to Spaniards Almagro and Javier Marti; former champs in the field are Almagro (2011,’08) and Ferrero (2010).

QATAR TOTAL OPEN; Doha, Qatar; Surface: hard

Seeds: Victoria Azarenka, Caroline Wozniacki, Sam Stosur, Aggie Radwanska, Marion Bartoli, Vera Zvonareva, Francesca Schiavone, Jelena Jankovic, Sabine Lisicki, Anastasia Pavlyuchenkova, Dominika Cibulkova, Peng Shuai, Ana Ivanovic, Svetlana Kuznetsova, Daniela Hantuchova, Julia Goerges

Floaters: Yanina Wickmayer, Flavia Pennetta, Angelique Kerber, Maria Kirilenko, Lucie Safarova

Notes: Petra Kvitova (Achilles) and Andrea Petkovic (back) withdraw due to injuries; tough openers include (7) Schiavone after a bye likely facing Wickmayer, (11) Cibulkova vs. Pennetta, (9) Lisicki vs. the hot-hander Kerber, and (2) Wozniacki after a bye likely facing Safarova; the lone former champ in the field is Zvonareva (2011), beating Wozniacki in last year’s final.

XX COPA BBVA COLSANITAS; Bogota, Colombia; Surface: clay

Seeds: Marina Erakovic, Alexandra Dulgheru, Romina Oprandi, Jelena Dokic, Gisela Dulko, Mathilde Johansson, Lourdes Dominguez Lino, Patricia Mayr-Achleitner

Floaters: none

Notes: Last year Spaniard Dom�nguez Lino won her second Bogota title, beating Mathilde Johansson in the final.