Alfonso Martín Castillo (born 10 June 1994), sometimes known as Alfonsito, is a Spanish footballer who plays as a midfielder.
[1] Born in Jerez de la Frontera, Cádiz, Martín graduated from Xerez CD's youth system, and made his senior debut with the reserves on 7 January 2013, against GE Bazán CF.
[2] On 3 May 2013, Martín made his debut for the first team, in a 1–3 home defeat against Córdoba CF in the Segunda División championship.
[8] The following 12 July, he agreed to a three-year contract with AD Alcorcón in the second division, but was immediately loaned to Cultural y Deportiva Leonesa for one year.
[9] On 25 August 2020, Martín was loaned to fellow third division side CD Atlético Baleares for the 2020–21 campaign.