Table:
0
A
B
C
D
E
F
1
Outcome
Date
Tournament
Surface
Opponent
Score
2
Winner
January 14, 2007
El Salvador F1, Santa Tecla
Clay
Jan Stancik
5–7, 6–1, 6–2
3
Winner
January 21, 2007
Guatemala F1, Guatemala City
Hard
John Paul Fruttero
7–6 (7–5) , 6–3
4
Winner
February 4, 2007
Costa Rica F1, San José
Hard
Lester Cook
2–6, 7–5, 6–3
5
Winner
March 11, 2007
USA F6, McAllen
Hard
Wesley Whitehouse
6–3, 6–2
6
Winner
January 20, 2008
Guatemala F1, Guatemala City
Hard
Marcel Felder
7–6 (7–5) , 6–3
7
Winner
September 25, 2011
Canada F7, Markham
Hard (i)
Jesse Levine
6–4, 3–6, 7–5
8
Winner
October 9, 2011
Venezuela F8, Caracas
Hard
Eduardo Struvay
6–1, 6–3
9
Winner
October 16, 2011
USA F26, Austin
Hard
John-Patrick Smith
4–6, 7–6 (7–5) , 6–4
10
Winner
February 26, 2012
USA F5, Brownsville
Hard
Daniel Cox
6–1, 6–3
11
Runner–up
March 4, 2012
USA F6, Harlingen
Hard
Thomas Fabbiano
1–6, 6–4, 3–6
12
Runner–up
March 18, 2012
Canada F2, Sherbrooke
Carpet (i)
Stefan Seifert
3–6, 6–7 (4–7)
13
Runner–up
July 8, 2012
Panama City , Panama
Clay
Rogério Dutra da Silva
3–6, 0–6
14
Runner–up
August 19, 2012
Canada F5, Mississauga
Hard
Danai Udomchoke
5–7, 6–7 (5–7)
15
Winner
September 8, 2012
Canada F7, Toronto
Clay
Chase Buchanan
6–4, 6–4
16
Runner–up
September 23, 2012
Canada F9, Markham
Hard (i)
Tennys Sandgren
4–6, 3–6
17
Winner
September 7, 2013
Canada F7, Toronto
Clay
Jason Jung
6–1, 6–1
18
Winner
September 14, 2013
Canada F8, Toronto
Hard
Sanam Singh
6–2, 6–2
19
Winner
October 13, 2013
Tiburon , United States
Hard
Matthew Ebden
7–5, 6–3
20
Runner–up
November 3, 2013
Charlottesville , United States
Hard (i)
Michael Russell
5–7, 6–2, 6–7 (5–7)

Questions and formulas:
Question: What type of surface did the tournament canada f9, markham have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="canada f9, markham"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,C2:C20="canada f9, markham"),4))
Level: medium