Table:
0
A
B
C
D
E
1
Date
Tournament
Surface
Opponent in the final
Score
2
4 July 1988
Båstad , Sweden
Clay
Sandra Cecchini
7–5, 6–1
3
1 August 1988
Athens , Greece
Clay
Laura Golarsa
6–0, 6–1
4
17 July 1989
Estoril , Portugal
Clay
Sandra Cecchini
7–6(3), 6–2
5
31 July 1989
Sofia , Bulgaria
Clay
Katerina Maleeva
6–2, 7–6(3)
6
9 July 1990
Palermo , Italy
Clay
Barbara Paulus
6–2, 6–3

Questions and formulas:
Question: What date was the opponent in the final Barbara Paulus?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="barbara paulus"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="barbara paulus"),1))
Level: medium
Question: What was the surface that Laura Golarsa and her opponent played on in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="laura golarsa"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="laura golarsa"),3))
Level: medium
Question: What was the score for the opponent against Katerina Maleeva in the final?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="katerina maleeva"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="katerina maleeva"),5))
Level: medium