Column player

Dataset

Data row number	Player
1	None
2	Andy Roddick
3	Andy Roddick
4	Roger Federer
5	Ivan Ljubičić
6	None
7	Nikolay Davydenko
8	Andy Roddick
9	Nikolay Davydenko
10	Tommy Haas
11	Andy Roddick
12	None
13	Nikolay Davydenko
14	Roger Federer
15	Richard Gasquet
16	Stan Wawrinka
17	Novak Djokovic
18	Novak Djokovic
19	Stan Wawrinka
20	Rafael Nadal
21	Roger Federer
22	Andy Roddick
23	Gilles Simon
24	Roger Federer
25	None
26	Roger Federer
27	Andy Roddick
28	Rafael Nadal
29	Roger Federer
30	Fernando Verdasco
31	Juan Martín del Potro
32	Novak Djokovic
33	Nikolay Davydenko
34	Nikolay Davydenko
35	Jo-Wilfried Tsonga
36	Juan Martín del Potro
37	Fernando Verdasco
38	Juan Martín del Potro
39	Fernando Verdasco
40	None
41	Rafael Nadal
42	Jo-Wilfried Tsonga
43	Rafael Nadal
44	Roger Federer
45	Roger Federer
46	Robin Söderling
47	David Ferrer
48	None
49	David Ferrer
50	Andy Roddick
51	Mardy Fish
52	Novak Djokovic
53	David Ferrer
54	Rafael Nadal
55	David Ferrer
56	None
57	Tomáš Berdych
58	Novak Djokovic
59	Janko Tipsarević
60	David Ferrer
61	Jo-Wilfried Tsonga
62	Novak Djokovic
63	Roger Federer
64	Tomáš Berdych
65	Novak Djokovic
66	Roger Federer
67	Tomáš Berdych
68	Jo-Wilfried Tsonga
69	None
70	Roger Federer
71	Richard Gasquet
72	David Ferrer
73	Jo-Wilfried Tsonga
74	Novak Djokovic
75	None
76	Jo-Wilfried Tsonga
77	Marin Čilić
78	David Ferrer
79	David Ferrer
80	Milos Raonic
81	None
82	Tomáš Berdych
83	Tomáš Berdych
84	Milos Raonic
85	Kei Nishikori
86	Rafael Nadal
87	David Ferrer
88	Kei Nishikori
89	Novak Djokovic
90	Tomáš Berdych
91	Richard Gasquet
92	David Ferrer
93	David Ferrer
94	None
95	David Ferrer
96	Kei Nishikori
97	Tomáš Berdych
98	Rafael Nadal
99	Novak Djokovic
100	Stan Wawrinka