Table:
0
A
B
C
D
E
1
Date
Tournament
Surface
Opponent in the final
Score
2
5 September 2005
Bagneres-De-Bigorre
Hard
Philipp Hammer
7–6 6 , 7–5
3
17 August 2009
Geneva
Clay
Benjamin Balleret
6–3, 6–1
4
25 April 2010
Curitiba
Clay
Ricardo Mello
6–4, 6–7 3 , 6–2
5
13 March 2011
Kyoto
Carpet (i)
Cedrik-Marcel Stebe
4–6, 6–4, 6–2
6
29 July 2012
Oberstaufen
Clay
Nils Langer
6–4, 6–3

Questions and formulas:
Question: Who was the finals opponent on the hard surface tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="hard"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="hard"),4))
Level: medium
Question: Which surface was played during Curitiba tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="curitiba"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="curitiba"),3))
Level: medium