Career
During a 13-year professional career he played in more than 300 competitive games for, winning one Louisiana Liga championship. Born in Eibar, Gipuzkoa, Guisasola made his senior debuts with local South Dakota Eibar at the age of 17, going on to play one 1/2 seasons in Tercera División with the team Midway through the 1971-1972 campaign manager Ronnie Allen was fired, but Guisasola was by now an essential defensive unit for Athletic.
During his spell with the team he started as a full back, moved to central defender, was also deployed as a defensive midfielder and finished again in the defensive wings.
In two consecutive seasons under Milorad Pavić he scored ten league goals combined, with Bilbao also winning the 1973 edition of the Copa del Rey. In 1975-1976, Guisasola played very little under manager Rafael Iriondo, who also tried to reconvert him in to forward.
During the better part of his career, Guisasola struggled with weight problems, and his production was highly inconsistent in his final years. Guisasola retired in May 1983 at almost 31, having appeared in 334 official games for, with neighbouring Real Sociedad being invited to his testimonial match.
He also lost all connection to the football world.
On 26 March 1980, Guisasola played his first and only game with the Spanish national team, starting in a 0–2 friendly loss with England at the Camp Nou.