|Full name||Fernando Rui Valadares Pinto Sampaio|
|Date of birth||29 May 1987|
|Place of birth||Vila Pouca de Aguiar, Portugal|
|Height||1.86 m (6 ft 1 in)|
|Playing position||Defensive midfielder|
|Cova da Piedade|
|2012||→ Olhanense (loan)||1||(0)|
|2013||→ Beira-Mar (loan)||12||(1)|
|2017–||Cova da Piedade||4||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 29 October 2017.
Born in Vila Pouca de Aguiar, Vila Real District, Sampaio spent his first four seasons as a senior in the Segunda Liga, appearing in the competition for G.D. Chaves, F.C. Penafiel and S.C. Beira-Mar. In 2009–10, he scored a career-best six goals for the latter club to help it return to the Primeira Liga after a three-year absence.
Sampaio made his debut in the Portuguese top division on 15 August 2010, coming on as 29th-minute substitute in a 0–0 home draw against U.D. Leiria. He went on to start in 28 of his appearances, helping his team retain their recently acquired status.
On 31 August 2011, Sampaio signed with Serie A side Cagliari Calcio for €600,000. He played in only seven competitive matches during his stint in Italy (one goal, in the Coppa Italia), being consecutively loaned to S.C. Olhanense and Beira-Mar and being released in January 2014, following which he agreed to a permanent one-and-a-half-year contract at F.C. Arouca also in his country's top level.
In the summer of 2015, Bastos joined French Ligue 2 team Red Star F.C. alongside compatriot Vítor Bastos. He was sparingly played at the Stade Jean-Bouin, and from January 2017 onwards he resumed his career in the Portuguese second tier, where he represented S.C. Freamunde and C.D. Cova da Piedade.
- "Beira-Mar 0–0 U. Leiria" (in Portuguese). SAPO. 15 August 2010. Retrieved 26 September 2017.
- "Cagliari, Rui Sampaio non convocato dal Beira-Mar" [Cagliari, Rui Sampaio not called by Beira-Mar] (in Italian). Calcio News 24. 27 August 2011. Retrieved 26 September 2017.
- "Ufficiale, Rui Sampaio al Cagliari" [Official, Rui Sampaio to Cagliari] (in Italian). Calcio News 24. 31 August 2011. Retrieved 26 September 2017.
- "Coppa Italia, Il Siena batte il Cagliari – Ora trova il Palermo" [Italian Cup, Siena beat Cagliari – Now they meet Palermo]. La Nazione (in Italian). 25 November 2011. Retrieved 26 September 2017.
- "Rui Sampaio emprestado pelo Cagliari ao Olhanense" [Rui Sampaio loaned by Cagliari to Olhanense] (in Portuguese). Rádio e Televisão de Portugal. 20 August 2012. Retrieved 26 September 2017.
- "Beira Mar: Rui Sampaio emprestado pelo Cagliari por seis meses" [Beira Mar: Rui Sampaio loaned by Cagliari for six months] (in Portuguese). Mais Futebol. 10 January 2013. Retrieved 26 September 2017.
- "Rui Sampaio chega para o meio-campo" [Rui Sampaio arrives for the midfield]. O Jogo (in Portuguese). 14 January 2014. Retrieved 26 September 2017.
- "Rui Sampaio signe au Red Star" [Rui Sampaio signs at Red Star]. Le Parisien (in French). 10 August 2015. Retrieved 26 September 2017.
- "Rui Sampaio é reforço do Freamunde" [Rui Sampaio is a Freamunde addition] (in Portuguese). Desportivo Transmontano. 22 January 2017. Retrieved 26 September 2017.
- "Rui Sampaio confirmado como jogador piedense" [Rui Sampaio confirmed as a piedense player]. Record (in Portuguese). 21 August 2014. Retrieved 26 September 2017.