This Week the Men's ATP Tour Heads to Estoril, Belgrade and Munich

BELGRADE ATP 250 - Top Seeds

1. Novak Djokovic (above) - Winner '09

2. John Isner - Debut

3. Sam Querrey - Round of 32 '09

4. Stanislas Wawrinka - Debut

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ESTORIL ATP 250 - Top Seeds

1. Roger Federer - Winner '08

2. Ivan Ljubicic - Round of 32 '00

3. Gael Monfils - Round of 16 '06

4. Albert Montanes - Winner '09

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MUNICH ATP 250 - Top Seeds

1. Marin Cilic - Quarterfinal '08 '09

2. Mikhail Youzhny - Finalist '07 '09

3. Tomas Berdych - Winner '09

4. Philipp Koehlschreiber - Winner '07

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Photo: Novak Djokovic Wins Debut Sebian Open '09

Getty Images