Table:
0
A
B
C
D
E
F
1
Date
Tournament
Surface
Partner
Opponents
Score
2
March 25, 2007
Canada F3, Rock Forest
Hard (i)
Érik Chvojka
Christophe Palmanshofer Jason Zimmermann
7–5, 6–3
3
October 12, 2008
Germany F22, Leimen
Hard (i)
Michal Navrátil
Nils Langer Frank Wintermantel
6–3, 6–4
4
November 9, 2008
Rimouski , Canada
Hard (i)
Milos Raonic
Kristian Pless Michael Ryderstedt
5–7, 6–4 [10–6]
5
November 23, 2008
Nicaragua F1, Managua
Hard
Jiří Krkoška
Alexandru Cojanu Deniss Pavlovs
7–6 (7–1) , 6–3
6
May 10, 2009
Mexico F4, Coatzacoalcos
Hard
Adil Shamasdin
Kaden Hensel Adam Hubble
6–3, 6–4
7
May 17, 2009
Mexico F5, Puerto Vallarta
Hard
Adil Shamasdin
Juan Manuel Elizondo César Ramírez
6–1, 2–6, [10–7]
8
July 19, 2009
USA F17, Peoria
Clay
Milos Raonic
Matt Reid Denis Zivkovic
6–3, 6–4
9
August 23, 2009
Romania F14, Arad
Clay
Marius Copil
Andrei Mlendea Jiří Školoudík
6–3, 6–4
10
September 20, 2009
Italy F28, Porto Torres
Hard
Marcus Willis
Alessandro Giannessi Francesco Piccari
4–6, 6–3, [10–8]
11
October 31, 2009
Mexico F12, Obregón
Hard
Nima Roshan
Adrien Bossel Julien Dubail
6–7, 6–3, [11–9]
12
November 29, 2009
Puebla , Mexico
Hard
Adil Shamasdin
Guillermo Olaso Pere Riba
7–6 (7–0) , 6–0
13
April 18, 2010
León , Mexico
Hard
Santiago González
Kaden Hensel Adam Hubble
3–6, 6–3, [10–8]
14
March 20, 2011
Rimouski , Canada
Hard (i)
Treat Conrad Huey
David Rice Sean Thornley
6–0, 6–1
15
March 28, 2011
USA F8, Oklahoma
Hard
Nicholas Monroe
Carsten Ball Chris Guccione
6–4, 6–3
16
April 4, 2011
Tallahassee , United States
Hard
Bobby Reynolds
Go Soeda James Ward
6–2, 6–4
17
June 26, 2011
Guadalajara , Mexico
Hard
Bobby Reynolds
Pierre-Ludovic Duclos Ivo Klec
6–4, 6–7 (6–8) , [10–6]
18
July 21, 2012
Granby , Canada
Hard
Philip Bester
Yuichi Ito Takuto Niki
6–1, 6–2

Questions and formulas:
Question: What was the surface for the May 10, 2009 tournament?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="may 10, 2009"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F18,A2:A18="may 10, 2009"),3))
Level: medium