Table:
0
A
B
C
D
E
1
Outcome
Date
Surface
Opponent
Score
2
Winner
14 June 2009
Grass
Li Na
6–0, 7–6 (7–2)
3
Winner
19 February 2011
Hard (i)
Rebecca Marino
6–2, ret.
4
Runner-up
24 September 2011
Hard
Chanelle Scheepers
2–6, 2–6
5
Winner
4 August 2012
Hard
Anastasia Pavlyuchenkova
6–1, 6–1
6
Winner
4 August 2013
Hard
Andrea Petkovic
6–4, 7–6 (7–2)

Questions and formulas:
Question: What is the score when Li Na was the opponent?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="li na"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,D2:D6="li na"),5))
Level: medium
Question: Who was the opponent on 19 February 2011?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="19 february 2011"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="19 february 2011"),4))
Level: medium