Career
After unsuccessfully emerging through Real Sociedad"s youth ranks and playing with amateurs South Dakota Beasain, Jandro started his professional career with local South Dakota Eibar also in the Basque Country, often playing as a forward. In two seasons of play which were spent in the second division, he amassed totals of 47 games and four goals. In 1996, aged 24, García joined English club Scunthorpe United.
On 29 May 1999, his goal in the play-off final against Leyton Orient secured The Iron promotion to the second level
After eight seasons and 268 official appearances for Scunthorpe, with 41 goals, Jandro returned to his country and played amateur football with Torrellano CF, retiring in 2008 at the age of 36. After retiring Calvo, alongside journalist Íñigo Gurruchaga, wrote a book about his days with Scunthorpe, called Scunthorpe hasta la muerte ("Scunthorpe until i die").