Martínez sustained an ACL injury during a match against Crystal Palace.

Martínez's deflected shot handed United a 1–0 victory over Fulham at Craven Cottage.

Martínez scored the opening goal in a 2–2 draw against Liverpool at Anfield.

Martínez was selected in the 26-man squad for the 2024 Copa América.

Martínez returned from injury and played in the 2024 FA Cup final against Manchester City, where United won 2–1.

Martínez sustained an MCL injury in a match against West Ham United.

Martínez returned from injury as a substitute in Manchester United's 2–2 draw against Tottenham Hotspur.

Martínez injured his right foot while playing in the Europa League quarter-final against Sevilla.

Martínez won his first trophy with Manchester United in the 2023 EFL Cup final against Newcastle United.

Martínez scored his first goal for Manchester United in a 3–2 defeat against Arsenal.

Martínez made his debut for Manchester United in a 2–1 home loss against Brighton & Hove Albion.

Martínez officially signed a five-year contract with Manchester United.

Manchester United agreed a deal with Ajax for the signing of Martínez.

Martínez scored his third goal for Ajax in a home win versus RKC Waalwijk.

Martínez scored his first goal for Ajax in a 2–0 victory over Groningen.

Martínez officially joined Ajax.

Ajax announced the completion of Martínez's medical, with the transfer to be finalized on 1 July.

Defensa y Justicia announced a deal with Ajax for the transfer of Martínez.

Martínez made his senior international debut for Argentina against Venezuela.

Martínez made his first appearance for Defensa y Justicia in a defeat against San Lorenzo.

Lisandro Martínez was born in Gualeguay, Argentina.