Debrecen won the Hungarian Cup in the 2007–08 season by beating Budapest Honvéd in the final 9–1 on aggregate.

In the first round of the Central-East region they drew in Kazakhstan against Shakhter Karagandy 1–1, while in the second leg they beat the Kazakh team by 1–0.

Rudolf won the 2008–09 Nemzeti Bajnokság I season after beating their provincial rivals Diósgyőri VTK 3–2 away.

After beating Kalmar FF, Levadia Tallinn, and Levski Sofia Debrecen reached the group stages of the 2009–10 UEFA Champions League season.

He scored his second goal against AC Milan in the Stadio Giuseppe Meazza in front of the 48,000 spectators on 13 March 2011.

[3] Rudolf signed a one-year loan contract with Panathinaikos on 31 August 2011, the last day of the 2011–12 summer transfer window.

[4] On 12 September 2012, Rudolf signed a three-year contract with Hungarian League club Diósgyőri VTK.

On 13 August 2013, he terminated his contract with Diósgyőr claiming that he was not happy playing for them after Tomislav Sivić became the head coach of the Borsod county team.

[6] He scored his first goal wearing Győr's shirt against MTK Budapest in a 2–1 victory at the Hidegkuti Nándor Stadium on 15 September 2013.

[10] Zoltán Kovács, sports director for Videoton, said that Rudolf was unable to perform at that level the club had expected from him.

Rudolf was a regular member of the Hungary national team squad in qualification for 2010 FIFA World Cup, and scored one of the goals in the 2–1 away defeat of Sweden on 10 September 2008.

[17] Rudolf was called up to play for the national squad since, until early 2014, in which he scored a goal against Finland in his first match back with the team, in an eventual 2–1 loss.