John Jairo Ruiz
|Full name||John Jairo Ruíz Barrantes|
|Date of birth||January 10, 1994|
|Place of birth||Puntarenas, Costa Rica|
|Height||1.75 m (5 ft 9 in)|
|Red Star Belgrade|
|2012–2013||→ Mouscron-Péruwelz (loan)||24||(14)|
|2014–2015||→ Oostende (loan)||30||(6)|
|2015–2016||→ Dnipro Dnipropetrovsk (loan)||14||(6)|
|2016–||Red Star Belgrade||24||(6)|
|2010–2011||Costa Rica U17||5||(5)|
|2011–2013||Costa Rica U20||12||(4)|
|2015||Costa Rica U22||4||(0)|
|2011–2015||Costa Rica U23||4||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 22 April 2017.
‡ National team caps and goals correct as of 24 January 2017
John Jairo began his career with C.D. Saprissa in 2011, scoring one goal against San Carlos on 11 September 2011. During the absence of Jairo Arrieta, Ruiz emerged as Saprissa's top striker in December 2011.
In January 2012, Ruiz signed a four-year contract with French side Lille OSC, and was playing with the reserve team until he was sidelined by injuries. In July 2012, Lille agreed a deal to send Ruiz to Belgian newly promoted Belgian Second Division team Royal Mouscron-Péruwelz on loan. After the 2013–14 season he spent playing with the first team and Lille II equally, Ruiz moved on new loan to Oostende, where he spent the whole 2014–15 season. On 25 August 2015, Ruiz was loaned to Ukrainian club Dnipro Dnipropetrovsk.
Red Star Belgrade
On June 28, 2016, Ruiz signed a three-year contract with Red Star Belgrade. He made his debut in an official match for Red Star on July 12, in the fist legg of the second qualifying round of the 2016–17 UEFA Champions League in a game Red Star was playing against Valletta F.C. away. Red Star won 1–2, and Ruiz entered as a substitute of Aleksandar Katai in 83rd minute.
Ruiz was selected in Costa Rica's squad for the 2011 CONCACAF U-17 Championship and he was named in the 2011 CONCACAF U-20 Championship. He participated in the 2011 FIFA U-20 World Cup finals in Colombia, where he scored Costa Rica's first goal of the tournament. Ruiz earned his first senior cap on 6 March 2014 in the 2:1 win over Paraguay in a friendly match after coming on as a second-half substitute for Bryan Ruiz.
- As of 22 April 2017
|Lille B||2011–12||CFA Group A||13||3||—||—||—||—||13||3|
|Mouscron (loan)||2012–13||Second Division||24||14||1||1||—||—||5[a]||4||30||19|
|Oostende (loan)||2014–15||Pro League||30||6||2||0||—||—||—||32||6|
|Dnipro (loan)||2015–16||Premier League||14||6||6||0||—||2||0||—||22||6|
- Appearances in league play-offs
- As of 24 January 2017
Young international goals
- Scores and results list Costa Rica's goal tally first.
|1.||26 October 2010||Limón, Costa Rica||Nicaragua||6–0||8–0||2011 CONCACAF U-17 Championship|
|2.||14 February 2011||Jarrett Park, Montego Bay, Jamaica||Haiti||3–1||3–1||2011 CONCACAF U-17 Championship|
|3.||18 February 2011||Jarrett Park, Montego Bay, Jamaica||El Salvador||1–0||3–2||2011 CONCACAF U-17 Championship|
|4.||18 February 2011||Jarrett Park, Montego Bay, Jamaica||El Salvador||2–1||3–2||2011 CONCACAF U-17 Championship|
|5.||18 February 2011||Jarrett Park, Montego Bay, Jamaica||El Salvador||3–2||3–2||2011 CONCACAF U-17 Championship|
|6.||31 July 2011||Estadio Palogrande, Manizales, Colombia||Spain||1–2||1-4||2011 FIFA U-20 World Cup|
|7.||3 August 2011||Estadio Palogrande, Manizales, Colombia||Australia||3–2||3–2||2011 FIFA U-20 World Cup|
|8.||6 August 2011||Estadio El Campín, Bogotá, Colombia||Colombia||1–1||2–3||2011 FIFA U-20 World Cup|
|9.||21 February 2013||Estadio Universitario BUAP, Puebla City, Mexico||Haiti||1–0||1–0||2013 CONCACAF U-20 Championship|
- Scores and results list. Costa Rica's goal tally first.
|1||10 October 2014||Sohar Regional Sports Complex, Sohar, Oman||Oman||2 – 1||4–3||Friendly|
- Звезда промовисала Руиза!
- Quesada C., Eliseo (11 September 2011). "Saprissa golea y sube al cuarto lugar" [Saprissa's goals lead up to fourth] (in Spanish). La Nación.
- Calderón Suárez, Miguel (3 December 2012). "John Jairo, el "as" de Guimaraes" [John Jairo, the "Ace" of Guimaraes] (in Spanish). Al Día.
- Herrera Ch., Juan José (10 January 2012). "Antes del jueves Ruiz será del Lille" [Ruiz will sign with Lille by Thursday] (in Spanish). La Nación.
- Agüero, Juan Carlos (27 February 2012). "Tico John Jairo Ruiz de 4 a 6 semanas fuera por lesión muscular" [Tico John Jairo Ruiz out 4 to 6 weeks with injured muscle] (in Spanish). Al Día.
- John Jairo Ruiz at Soccerway
- "John Jaïro Ruiz transféré au FK Dnipro". LOSC.fr (French). Lille OSC. Retrieved 25 August 2015.
-  Mondo: Ruiz na Marakani: Drugi nudili pare, Zvezda fudbal. (Serbian) June 28, 2016. Retrieved June 28, 2016
- John Jairo Ruiz profile at Soccerway
- Loría Ortega, Alexánder (1 August 2011). "El "cumiche" entró en la historia" ["Cumiche" entered history] (in Spanish). Diario Extra.
- "Costa Rica vs. Paraguay 2:1". flashscore.com. Retrieved 2014-03-13.
- Costa Rica con solo seis legionarios en Copa Centroamericana at elgrafico.com, 3-1-2017, retrieved 8-1-2017 (Spanish)
- John Jairo Ruiz at National-Football-Teams.com