Mendoza beat opposing candidate Alfonso Ussía by 20% of the votes (15,005 to 10,531) in January 1991 to secure his third term.
In the elections which were dominated by accusations of fraud, corruption and mismanagement of the club, he nevertheless managed to beat Florentino Pérez by 700 votes.
His first years leading the club were very successful and saw the rise of the La Quinta del Buitre.
Real Madrid won a record 5 consecutive league titles and was considered one of the best teams in Europe at the time.
The second half of Mendoza's presidency was marked by a slow decline in the achievements of the club, a fact that was highlighted by a very strong Barcelona team.