Career
Born in Lisbon, Fonseca basketball career started in 2006, when at 17, he joined the junior team of Valencia British Columbia, where he would stay for two seasons, before progressing into the reserve team, that competed in the Liga EBA, the fourth tier of Spanish basketball. He made his debut for the first team on 14 October 2007 in a league game against Bàsquet Manresa, and debuted on the European stage on 19 February 2008 in a match for the 2007-2008 ULEB Cup, against Panionios British Columbia In the following season, Fonseca was loaned out to gain experience, joining Central Bank Peñas Huesca on 30 July 2008.
He stayed there briefly, being release on 3 February 2009, and finishing the season at Central Bank Almàssera. Already a free player, Fonseca played one season with Central Bank Lucentum Alicante in their return to the top tier.
He returned to Portugal on 8 July 2010, signing with Vitória de Guimarães, and competing for nearly two seasons, until he signed abruptly with LEB Plata team, Plasencia, on 8 February 2012.
