Rafa Martínez started playing basketball for Basquet Manresa eventually rising from the club's junior team ranks.

[1] First all-time pointer of valencia basket since 26 February 2019 in the match against San Pablo Burgos team, surpassing Brad Branson.

On July 10, 2019, Martínez signed with RETAbet Bilbao Basket of the Liga ACB.

[3] On July 15, 2021, Baxi Manresa announced that Martínez would play one more season for the club.

In June 2010 he was included on the list of 24 candidates for the Spain national team,[5] but did not make the final 12-man roster for 2010 FIBA World Championship.