[2] His younger brother, Eduardo, was Real Oviedo's all-time top scorer in La Liga, with 117 goals in 213 games.

At the time, center-forwards usually were corpulent, aggressive and impetuous players, but Herrera, in poor physical condition, revolutionized the way of playing as a forward striker, imposing his talent, his technique with the ball, his off-the-ball movement and intuition to position himself in the right place, thus earning the nickname "El Sabio" from his contemporaries.

After three seasons at the club in which he managed 13 goals, Herrera went to Real Betis in 1929, but played on few occasions, because he was hospitalized for many months trying to alleviate his illness.

When the Spanish Civil War broke out in 1936, he immediately decided to enlist with the nationals and repel the Republican troops from his land.

[3] So, he continued his military adventures and in World War II he decided to enlist as a volunteer in the Blue Division, going to fight the USSR, but he did not find death there either,[3] so he returned to Spain to work in a Shipping agency company, and as a hobby he earned some extra money doing crossword puzzles for various publications in Barcelona.