Luis "Luigi" Díaz Barriga (born 9 April 1986) is a Mexican former professional tennis player.

Diaz Barriga competed mainly on the ATP Challenger Tour and ITF Futures Tour, both in singles and doubles. He reached his highest ATP singles ranking, No. 461 on 16 July 2012, and his highest ATP doubles ranking, No. 233, on 2 May 2011.^[1][2]

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Sep 2011	Mexico F11, Mazatlán	Futures	Hard	Eduardo Peralta-Tello	3–6, 3–6
Win	1–1	Oct 2011	Mexico F12, Veracruz	Futures	Hard	Marcus Daniell	6–4, 3–6, 6–3

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	0–1	Oct 2008	Mexico F12, Mazatlán	Futures	Hard	Daniel Garza	Fabrice Martin Adil Shamasdin	walkover
Win	1–1	Feb 2009	Mexico F2, Naucalpan	Futures	Hard	Antonio Ruiz-Rosales	Treat Huey Gregory Ouellette	6–3, 6–2
Loss	1–2	Mar 2009	USA F6, McAllen	Futures	Hard	Antonio Ruiz-Rosales	Ruben Gonzales Andreas Siljeström	3–6, 7–6(12–10), [4–10]
Loss	1–3	Jul 2009	USA F18, Joplin	Futures	Hard	Robbye Poole	Cory Parr Todd Paul	1–6, 2–6
Loss	1–4	Sep 2009	Mexico F9, León	Futures	Hard	Antonio Ruiz-Rosales	Juan Manuel Elizondo Miguel Gallardo Valles	0–6, 7–5, [5–10]
Loss	1–5	Feb 2010	Mexico F1, Mexico City	Futures	Hard	Miguel Ángel Reyes-Varela	Daniel Garza Bruno Rodríguez	4–6, 5–7
Loss	1–6	Apr 2010	Brazil F2, Bauru	Futures	Clay	Miguel Ángel Reyes-Varela	Miguel Cicenia Maximiliano Estévez	6–7(3–7), 6–2, [6–10]
Win	2–6	May 2010	Brazil F4, Fortaleza	Futures	Clay	Miguel Ángel Reyes-Varela	Franco Ferreiro Fernando Romboli	6–7(5–7), 7–6(7–2), [10–6]
Win	3–6	May 2010	Brazil F5, Teresina	Futures	Clay	Miguel Ángel Reyes-Varela	Alexandre Bonatto José Pereira	6–4, 3–6, [10–7]
Loss	3–7	May 2010	Brazil F6, Caldas Novas	Futures	Hard	Miguel Ángel Reyes-Varela	André Miele Franco Ferreiro	3–6, 4–6
Loss	3–8	May 2010	Brazil F7, Marília	Futures	Clay	Miguel Ángel Reyes-Varela	Marcelo Demoliner Rodrigo Guidolin	6–4, 1–6, [9–11]
Win	4–8	May 2010	Brazil F8, Juiz de Fora	Futures	Clay	Miguel Ángel Reyes-Varela	Thales Turini Gustavo Junqueira	6–2, 6–0
Loss	4–9	Jun 2010	Venezuela F2, Coro	Futures	Hard	Miguel Ángel Reyes-Varela	Juan Sebastián Cabal Robert Farah	6–7(5–7), 6–7(6–8)
Loss	4–10	Aug 2010	Italy F21, Appiano	Futures	Clay	Miguel Ángel Reyes-Varela	Karim Maamoun Sherif Sabry	4–6, 5–7
Win	5–10	Sep 2010	Italy F24, Trieste	Futures	Clay	Miguel Ángel Reyes-Varela	Marco Bortolotti Alessandro Giannessi	7–5, 6–3
Win	6–10	Dec 2010	Mexico F12, Guerrero	Futures	Clay	Miguel Ángel Reyes-Varela	Christopher Díaz Figueroa Iván Endara	6–2, 6–3
Win	7–10	Jan 2011	Mexico F1, Mexico City	Futures	Hard	Miguel Ángel Reyes-Varela	Mauricio Astorga Miguel Gallardo Valles	6–4, 7–6(7–5)
Loss	7–11	Feb 2011	El Salvador F1, Santa Tecla	Futures	Clay	Miguel Ángel Reyes-Varela	Chris Letcher Brendan Moore	2–6, 2–6
Loss	7–12	Mar 2011	San Jose, Costa Rica	Challenger	Hard	Santiago González	Juan Sebastián Cabal Robert Farah	3–6, 3–6
Win	8–12	May 2011	Mexico F4, Guadalajara	Futures	Hard	Antonio Ruiz-Rosales	Darian King Haydn Lewis	7–6(9–7), 6–4
Loss	8–13	Jun 2011	Mexico F5, Celaya	Futures	Hard	Miguel Ángel Reyes-Varela	Christopher Díaz Figueroa Marcel Felder	6–3, 3–6, [5–10]
Loss	8–14	Sep 2011	Mexico F11, Mazatlán	Futures	Hard	Chris Kwon	Marvin Barker Chris Letcher	3–6, 2–6
Win	9–14	Dec 2011	Mexico F14, Ixtapa	Futures	Hard	Adam El Mihdawy	César Ramírez Nima Roshan	6–4, 6–4
Win	10–14	Dec 2011	Mexico F16, Guadalajara	Futures	Clay	Adam El Mihdawy	Bruno Rodríguez Manuel Sánchez	6–3, 6–3
Win	11–14	Apr 2012	Mexico F3, Córdoba	Futures	Hard	Chris Letcher	Riccardo Ghedin Denis Zivkovic	6–2, 7–6(7–3)
Win	12–14	Apr 2012	Mexico F4, Mexico City	Futures	Hard	Daniel Garza	Marvin Barker Chris Letcher	6–4, 6–3

• Luis Díaz Barriga at the Association of Tennis Professionals
• Luis Díaz Barriga at the International Tennis Federation
• Luis Díaz Barriga at the Davis Cup