Pars previously held the world junior record (6 kg) with 81.35 metres, achieved in September 2001 in Szombathely.

In the 2009 season, he began well with a victory at the 2009 European Winter Throwing Cup, but missed out on a major medal at the 2009 World Championships in Athletics with a fourth-place finish.

[1] At the 2012 London Olympics he took the gold in the hammer throw with a winning toss of 80.59 m.[2] On 10 April 2018, he was banned until July 2019 because of a doping violation.

[3] He apologized to everybody for making a bad decision in a hard situation at a birthday party, as he tried something he had never before while being drunk.

Later, based on public information from the AIU (Athletics Integrity Unit), it was revealed that cocaine was found in his blood.