After starting his footballing career at his local FC Futura, the 9-year old defender moved to HJK in 1999.
•
After coming through the junior levels and the reserves, Sumusalo made his first division debut on 25 May 2009 against FC Lahti.
Mikko Leppilampi | Mikko Ilonen | Mikko Kuustonen | Mikko Paatelainen | Mikko Lindström | Mikko "Linde" Lindström | Mikko Hirvonen | Mikko Alatalo | Mikko Vilmunen | Mikko Ruutu | Mikko Rämö | Mikko Manninen | Mikko Lampi | Mikko Kurvinen | Mikko Hyppönen |