Marta Cox

Cox is 1.64 m (5 ft 4+1⁄2 in) tall, and plays in the midfielder/striker position. She played in her country for Universitario (formerly Chorrillo FC) in the Liga de Fútbol Femenino. She then went abroad, and was with the clubs Cortuluá in Colombia and Indiana in the United States.

Alajuelense

In the 2020–21 season, she was with Alajuelense in the Costa Rican Women's Premier Division. At the end of the season, she left the club for Mexico.

León

In July 2021, Cox signed with Club León. In doing so, she became the first foreign player to join the Liga MX Femenil team.

Pachuca

She played for Pachuca in the Liga MX Femenil, leaving the club at the end of 2023.

Tijuana

She transferred to Tijuana, and played in the first halof the 2024–25 Liga MX Femenil season.

Fenerbahçe

Mid January 2025, Cox moved to Turkey, and signed a one-and-half-year deal with the Istanbul-based club Fenerbahçe to start playing in the second half of the 2024-25 Super League season.

Cox was admitted to the Panama national senior team when she was 14 years old. She made her debut with the senior national team in a UNCAF tournament in Guatemala on 20 May 2014 in a game where Panama lost 1-0 to Guatemala. She took part at the 2019 FIFA Women's World Cup qualification.

Marta Alexandra Cox Villarreal was born in El Chorrillo neighborhood of Panama City, Panama on 20 July 1997. She started in football when she was only six years old at the local club Chorrillo FC. She was supported by her parents in her career. Her father kept supporting her also after her mother's death. At the age of 14, she debuted in the Panama national senior team.

Fenerbahçe

Turkish Super League: 2025–26