Career
He has played more than 290 domestic games with Litex Lovech and holds the record for most domestic games played by a foreigner in the Bulgarian A Group. He is also the first foreigner to become a captain of a Bulgarian team In 2004 he obtained a Bulgarian passport.
In Serbia
Young Jelenković joined the local team FK Novi Sad to start his youth career.
In 1997 he signed with FK Obilić. Litex Lovech
In 1999 Jelenković moved to Litex Lovech.
He made his first appearance for Litex in a Champions League qualification match against Widzew Łódź, on 28 July 1999. His league debut came on 8 August, in a 1–0 loss against Slavia Sofia on the opening day of the 1999-1900 season.
Three weeks later, he scored an own goal in a 1–0 home loss against Panathinaikos in the first round of the tournament.
In 2006, Jelenković was on the radar of then Bulgarian manager Hristo Stoichkov as a prospective candidate for the national team, but eventually did not meet the eligibility criteria because of having appeared in matches for the First Revision Yugoslavia U-21. In the same year CSKA Sofia attempted to secure the services of the Serbian midfielder. On 30 August 2007, Kuban Krasnodar confirmed Jelenković has joined on loan for three months.
He spent most of his time with Kuban on the bench, making only three Russian Premier League appearances.
In December Jelenković returned to Litex and earned 12 appearances in the Bulgarian A PFG, scored one goal to the end of the season. Spartak Trnava
At the end of 2007-2008 season his contract expires and Jelenković signs with Spartak Trnava on a one-year contract for the 2008-2009 season.
He earned 27 appearances playing in the Slovak Superliga, scored one goal and the team finished on third place. Return to Litex Lovech
On 12 June 2009, Jelenković again comes back to Litex Lovech on a long term contract.
Jelenković announced his retirement at the end of the 2012-2013 season.