In the opening league match against Vitória de Setúbal on 18 August, Martínez scored the third goal in a 3–1 win. He scored his second league goal a week later against Marítimo. On 1 September, he scored the only goal in a 0–1 away win against Paços de Ferreira. Martínez scored again the following week in a victory against Gil Vicente, also adding another off a pass from Lucho González in a 2–2 draw with Estoril on 22 September. On 6 October, he scored a double against recently promoted Arouca in a 3–1 victory. On 19 January 2014, Martínez scored his 50th goal in all competitions for Porto in a 3-0 win over Vitoria Setubal. On 6 April, he scored a double, including a penalty, in a 3-1 victory against Academica de Coimbra.