Table:
0
A
B
C
D
E
1
Date
Tournament
Surface
Opponent
Score
2
10 August 1998
San Marino
Clay
Mariano Puerta
6–2, 7–5
3
26 April 1999
Prague , Czech Republic
Clay
Sláva Doseděl
6–2, 6–2
4
8 January 2001
Auckland , New Zealand
Hard
Francisco Clavet
6–4, 2–6, 6–3
5
5 January 2004
Adelaide , Australia
Hard
Michaël Llodra
6–4, 6–0
6
12 January 2004
Auckland, New Zealand
Hard
Rafael Nadal
4–6, 6–2, 7–5
7
23 February 2004
Marseille , France
Hard (i)
Robin Söderling
4–6, 6–4, 6–4

Questions and formulas:
Question: Who was the Opponent in the Auckland, New Zealand Tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="auckland, new zealand"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="auckland, new zealand"),4))
Level: medium
Question: On what Date was Rafael Nadal the Opponent?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="rafael nadal"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="rafael nadal"),1))
Level: medium
Question: Who was the Opponent on a Hard (i) Surface?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="hard (i)"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="hard (i)"),4))
Level: medium
Question: What was the Score at the Auckland, New Zealand Tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="auckland, new zealand"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="auckland, new zealand"),5))
Level: medium