As a youth, Martínez played for Wagierale FC and was a regular scorer for the club.[2] He played for Wagiya SC of the Premier League of Belize through the end of the opening round of the 2023–24 season.[3] He had scored three goals in the first ten matches of the campaign.[4]
In January 2024, prior to the start of the second half of the season, Martínez moved to league rivals Verdes FC. Soon thereafter, he scored the game-winning goal in a victory over Benque Viejo United FC in the Western Championship, a knock-out tournament to determine the top club in the Cayo District. It was Martínez's first goal for the club.[5] Verdes FC went on to win the tournament.[6] In the opening match of the second half of the season, and Martínez's first league match with Verdes, he scored in a 3–0 victory over Belmopan Bandits.[1][7]
Martínez received his first senior international call-up in March 2024 for a pair of friendlies against Puerto Rico at home.[12] He made his senior international debut on 24 March 2024, in the second fixture. After entering the match as a substitute, he scored his first senior international goal in the eventual 3–0 victory.[13]
International goals
Scores and results list Belize's goal tally first.[14]