Martínez also won two Copas Libertadores, in 2015 and 2018, as well as one Suruga Bank Championship in 2015, in which he scored in River's 3–0 win over Gamba Osaka.

On 9 December 2018, Martínez scored his side's third goal to seal a 3–1 win, 5–3 aggregate victory, over Boca Juniors in the second leg of the Copa Libertadores held at Real Madrid's Bernabéu Stadium.

[9] On 7 September 2020, Martínez joined Saudi Professional League side Al-Nassr for a reported transfer fee of $18 million.

[13] He started the match, scored from the penalty spot after a handball by Elías Vásquez midway through the first half, and was replaced by Franco Vázquez in the 56th minute.

[14] His nickname, Pity, refers to the wren ("pititorra"), from his native homeland of Guaymallén, in Mendoza, Argentina.