|Full name||Kari Juhani Sundgren|
|Date of birth||25 October 1967|
|Place of birth||Vammala, Finland|
|Height||1.87 m (6 ft in)|
|* Senior club appearances and goals counted for the domestic league only|
Sundgren was born in Vammala, Finland, but moved to Sweden with his parents as a toddler, being raised in Västerås. There, he was often called Gary and it caught on, being addressed in the latter manner for the duration of his career.
Sundgren started playing professionally with AIK Fotboll, being an undisputed starter from an early age. He scored the winner against Malmö FF when they became Swedish champions for the first time in 55 years, in 1992.
|1.||16 February 1997||Supachalasai, Bangkok, Thailand||Thailand||1-0||3-1||1997 King's Cup|