Sergio Guerrero Romero

Club career Born in Alameda, Málaga, Andalusia, Guerrero joined Málaga CF's youth setup in 2014, after a brief period at UD Maracena. He made his senior debut with the reserves on 29 October 2017, coming on as a second-half substitute for Pablo Clavería in a 6–1 Tercera División home routing of Guadix CF, and contributed with one further appearance as the side achieved promotion to the Segunda División B.

On 3 October 2018, Guerrero was loaned to fourth division side CD El Palo for the season. He scored his first senior goal on 31 October in a 3–1 home win against Antequera CF, and established himself as a regular starter during his loan spell.

Mini returned to Málaga in July 2019, being again assigned to the B-team. He made his first team – and professional – debut on 8 May 2021, replacing Joaquín Muñoz in a 1–1 away draw against RCD Mallorca in the Segunda División.

On 9 July 2021, Guerrero moved to another reserve team, Atlético Madrid B of the Tercera División RFEF. He became and undisputed starter of the side in their two consecutive promotions, becoming team captain in the process and being an unused substitute with the main squad in two UEFA Champions League matches.

On 11 July 2024, Guerrero signed a two-year contract with FC Cartagena in the second division.

On 22 July 2025, Guerrero joined recently promoted Polish top flight side Bruk-Bet Termalica Nieciecza on a two-year deal with an extension option.