Early career Lehtinen has previously played for
TP-Seinäjoki and was a youth player at English club
Peterborough United. He returned to TP-Seinäjoki in 2002.
FC Haka Toni signed for
FC Haka in 2003. He won the
Veikkausliiga in 2004 and finished runners up in 2007. He finished as the second highest scorer in the Veikkausliiga in 2004, 2007 and 2008 with 11 league goals in each of those seasons. He won the Veikkausliiga Rookie of the Year award in 2004. He won the
Finnish Cup in 2005.
Levadiakos, FC Aarau He joined the Greek club
Levadiakos in the
Super League Greece in January 2009, and joined
FC Aarau in the
Swiss Super League later that year after the Greek season had ended.
Return to Finland He returned to FC Haka after the 09/10 season with FC Aarau had finished. Signed for IFK Mariehamn in January 2011. After only one season with IFK, he left the Mariehamn-based club and signed a five-year contract with
SJK in
Ykkönen. ==International career==