|Full name||Armando Riveiro Aguilar Malda|
|Date of birth||January 16, 1971|
|Place of birth||Sopelana, Spain|
|Height||1.80 m (5 ft 11 in)|
|1992–1994||Sporting Gijón B|
|2008||→ Athletic Bilbao (loan)||16||(0)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
He spent most of his 20-year senior career with Cádiz (nine seasons overall, appearing in all three major levels of Spanish football), finishing it with Athletic Bilbao where he played three of his four La Liga campaigns.
Armando was born in Sopelana, Biscay. After representing several clubs in the lower leagues, with an unassuming three-year second division spell at Deportivo Alavés, he spent nine years of his career at Cádiz CF, being the second level's Zamora in 2004–05 and first-choice throughout most of the following season's La Liga, as the Andalusians were immediately relegated back.
In January 2008 Cádiz loaned Armando to Athletic Bilbao, which had lost first-choice Gorka Iraizoz for six months due to a knee injury. In a 15 March away match against Real Betis, Armando was hit by a bottle thrown by a Betis fan, with twenty minutes left and Bilbao leading 2–1; he needed six stitches to a wound just inches below the eye, as Athletic were late awarded the win by the Royal Spanish Football Federation.
At the season's end the loan move was made permanent by the Basque outfit and, with Iraizoz recovered, Armando beat competition from Iñaki Lafuente and served as backup. His only two appearances in 2008–09 were on 28 February 2009 in a 1–2 home loss against Sevilla FC, as manager Joaquín Caparrós rested the entire starting squad for the Copa del Rey semifinal second leg, precisely against Sevilla, and against Real Betis also at San Mamés in a 1–0 success, due to the same reasons (the upcoming final against FC Barcelona).
Armando retired at the end of the 2009–10 season, having appeared in three matches (one in the league – in the last round – and two in the cup). The 39-year old was immediately appointed to Athletic's coaching staff for the following campaign.