2003-04: Played for the Finnish U-18 team. Very good second half of the season.
2005-06: Tuomainen remained loyal to the second tier organization TuTo. The organization does have a first-tier junior B team, so he skipped the junior A level entirely and split the 2003-04 season between junior B and men’s second tier. A Viking Cup winner in 2004, Tuomainen has been a national team regular.
Attended Thrashers 2007 prospects development camp.
The Thrashers relinquished the rights to Tuomainen in 2009.
The big and burly winger is physical, passable skater for his size. One shouldn't expect more than a utility player out of him.