Carlos Ruiz Herrero
|Full name||Carlos Ruiz Herrero|
|Date of birth||7 June 1948|
|Place of birth||Bilbao, Spain|
|Height||1.83 m (6 ft 0 in)|
* Senior club appearances and goals counted for the domestic league only.
Born in Bilbao, Biscay, Ruiz played during 11 seasons with Athletic Bilbao, plus one in the reserves, having been signed in 1969 from Basque neighbours CD Getxo. On 12 September 1970 he made his debut for the first team, playing the dying minutes of the 1–1 home draw against FC Barcelona.
In the following years Ruiz continued to be used regularly by the club, although he was not always an undisputed starter. In the 1974–75 season, however, he scored a career-best 19 goals in 32 games (winning the Pichichi Trophy in the process), for a tenth place in La Liga; on 18 May 1977 he netted the 2–1 at home against Juventus FC in the campaign's UEFA Cup final – scoring a total of five during the side's continental run – but the Italians won it on the away goals rule.
Ruiz still enjoyed two seasons in double digits until he left Athletic (including 1977–78, with 16 goals), but also dealt with several injuries. He eventually retired from the game in the 1982 summer at the age of 34, after a spell with RCD Español, amassing top flight totals of 234 matches and 83 goals.