[2] On 24 April 2013 Martínez made his first team debut, coming on as a second-half substitute for Mauro Díaz in a 0–1 Copa Argentina home loss against Estudiantes Buenos Aires.
[6] Because chances with the first team were limited, on 18 August 2015 Martínez was loaned to Segunda División side Tenerife, in a season-long deal.
[9] Martínez would find more success back in Argentina then he did in Spain, scoring three goals and picking up two assists for Defensa y Justicia.
He picked up a goal and assist on 14 April against the Earthquakes and made his first ever MLS team of the weak as a result of his strong performance.
Martínez scored his first goal of the season on 13 April, curling in a left footed shot to the side netting to give Houston a 2–1 win over San Jose.
[14] On 11 June, Martínez picked up a goal an assist to help Houston get a 3–2 win over Austin Bold in a US Open Cup match.
[9] Martínez enjoyed his most productive month of the season in July, scoring goals in Dynamo wins against New York Red Bulls and Toronto FC as well as picking up an assist in a 3–1 defeat to LAFC.
Ramos primarily used lineups without a central attacking midfielder, reducing the opportunities for Martínez to play in his preferred position.