May 2nd Rankings

Juan Martin del Potro, champion in Estoril, moves up three places to 7th, switching spots with Stanislas Wawrinka, who drops to 10th.

Winners:

Belgrade
#1 Novak Djokovic SRB (2)
1st round Bye
2nd round Adrian Ungur ROU (134) | 6-2 6-3
Quarters Blaz Kavcic SLO (92) | 6-3 6-2
Semis #7 Janko Tipsarevic SRB (32) | Walkover
Final Feliciano Lopez ESP (35) | 7-6(4) 6-2
Average Opponent Rank 87

Estoril
#8 Juan Martin del Potro ARG (7)
1st round Pedro Sousa POR (524) | 6-2 3-6 6-3
2nd round Alejandro Falla COL (112) | 6-2 6-1
Quarters #1 Robin Soderling SWE (4) | 6-4 7-5
Semis Pablo Cuevas URU (45) | 6-2 7-6(6)
Final #2 Fernando Verdasco ESP (24) | 6-2 6-2
Average Opponent Rank 141.8

Munich
#7 Nikolay Davydenko RUS (34)
1st round Andrey Kuznetsov RUS (190) | 6-1 7-6(4)
2nd round Julian Reister GER (89) | 3-6 7-6(5) 6-1
Quarters #3 Marin Cilic CRO (22) | 7-5 6-3
Semis Radek Stepanek CZE (36) | 6-3 4-0 Retired
Final #5 Florian Mayer GER (27) | 6-3 3-6 6-1
Average Opponent Rank 72.8

Djokovic cruised through his home tournament, playing only three matches, and playing just one top 50 opponent. Lopez did challenge him in the first set of the final, but other than that it was a dominant performance from the Serbian, still undefeated in 2011.

Juan Matin del Potro continues to build himself back towards the top ranking spots, and looked very good in winning at Estoril. He actually struggled somewhat in his first match against a lowly ranked home wildcard, but then went through the tournament without dropping a set, including a win against #4 Soderling and crushing Verdasco in the final.

Nikolay Davydenko, another player looking to rebuild his ranking, was the other winner on the week, taking the tournament in Munich. He didn't get any marquee wins along the way, but his last three matches against top 40 players were all solid wins to propel him to the title.


Challengers:
Leon: #3 Bobby Reynolds USA (106) d. Andre Begemann GER (272) | 6-3 6-3
Ostrava: Stephane Robert FRA (115) d. Adam Kellner HUN (269) | 6-1 6-3
Sarasota: James Blake USA (61) d. Alex Bogomolov Jr. USA (103) | 6-2 6-2

Futures:
Argentina F3: Andres Molteni ARG (213)
Brazil F11: Steven Diez CAN (525)
Great Britain F5: Enrico Burzi ITA (436)
India F5: Patrik Rosenholm SWE (n/a)
Italy F7: Matwe Middelkoop NED (349)
Kazakhstan F1: Denis Matsukevitch RUS (395)
Spain F13: Roberto Carballes Baena ESP (n/a)
Turkey F15: Arnau Brugues-Davi ESP (210)
USA F10: Daniel Garza MEX (462)
Venezuela F1: David Souto VEN (467)

Riser of the Week (top 100):
Nikolay Davydenko RUS (34), Up 13
Davydenko's solid week gives him a nice boost, away from the edge of the top 50, where he had been sitting for the last few weeks. His solid wins over Cilic and Mayer were the main driving force for his rise.

Riser of the Week (other):
Stephane Robert FRA (115), Up 30
Robert looks like the kind of player who is too good for challengers, but not quite good enough for the ATP level. He won on clay at Ostrava, getting some useful victories over Lukas Rosol (135), Benoit Paire (175) and Sergei Bubka (212).

Dropper of the Week (top 100):
Ernests Gulbis LAT (58), Down 24
Gulbis had a great clay season last year, but his form this season could see him take a big drop. He lost last year's Rome run from his ranking this week, which included a win over Roger Federer (3), before falling in the semifinal to Rafael Nadal (1). This week, he played at Belgrade, but lost first round, going out easily to Illya Marchenko (136).

Dropper of the Week (other):
Jose Acasuso ARG (117), Down 26
The Argentine has not done much this season, and sees his ranking fall after dropping a good result from last year, in which he won the Tunis challenger, beating Pablo Andujar (82), Marsel Ilhan (142) and Daniel Brands (138). This week, he didn't play, and losing those wins sends him out of the top 100.


1 (1). Rafael Nadal ESP - 838.0
Last week: None

2 (2). Novak Djokovic SRB - 829.7
Last week: Belgrade W

3 (3). Roger Federer SUI - 825.0
Last week: None

4 (4). Robin Soderling SWE - 797.1
Last week: Estoril QF (l. del Potro)

5 (5). Andy Murray GBR - 796.6
Last week: None

6 (6). David Ferrer ESP - 789.4
Last week: None

7 (10). Juan Martin del Potro ARG - 782.0
Last week: Estoril W

8 (8). David Nalbandian ARG - 777.3
Last week: None

9 (9). Jurgen Melzer AUT - 776.1
Last week: None

10 (7). Stanislas Wawrinka SUI - 775.8
Last week: Munich R32 (l. Brown)

11 (12). Tomas Berdych CZE - 774.4
Last week: None

12 (11). Gael Monfils FRA - 774.1
Last week: None

13 (13). Mardy Fish USA - 774.1
Last week: None

14 (15). Nicolas Almagro ESP - 771.7
Last week: None

15 (14). Andy Roddick USA - 770.9
Last week: None

16 (16). Richard Gasquet FRA - 766.2
Last week: None

17 (18). Viktor Troicki SRB - 760.0
Last week: Belgrade R16 (l. Granollers)

18 (17). Jo-Wilfried Tsonga FRA - 758.3
Last week: Estoril R16 (l. Cuevas)

19 (19). Gilles Simon FRA - 756.7
Last week: Estoril QF (l. Raonic)

20 (20). Mikhail Youzhny RUS - 756.6
Last week: Munich R16 (l. Petzschner)

21 (21). Lleyton Hewitt AUS - 753.4
Last week: None

22 (22). Marin Cilic CRO - 752.2
Last week: Munich QF (l. Davydenko)

23 (27). Alexandr Dolgopolov UKR - 747.7
Last week: None

24 (23). Fernando Verdasco ESP - 747.5
Last week: Estoril F (l. del Potro)

25 (26). Michael Llodra FRA - 746.3
Last week: None

In: Alexandr Dolgopolov, Michael Llodra
Out: Philipp Kohlschreiber, Tommy Robredo