Pranjić had the most success with Bundesliga side Bayern Munich, winning the double in the 2009–10 season and reaching the 2010 and 2012 Champions League final.

While at Dinamo Zagreb, he also played regularly during their 2004–05 UEFA Cup campaign, making six appearances and scoring one goal in the competition.

[6][7] He struggled to make an impact in his first season with the club, starting only 14 matches and losing out to first choice left-back Holger Badstuber.

On 13 July 2012, after the expiration of his Bayern contract, Pranjić was announced as a new signing for Portuguese Primeira Liga team Sporting CP.

He played nine games for Os Leões before joining Spanish La Liga club Celta de Vigo in January 2013 on loan until the end of the season.

Asked to play a defensive role by Croatia coach Slaven Bilić, although still predominantly a midfielder in his club career, Pranjić was the only Croatian to start all four games at the UEFA Euro 2008 finals.

He kept his place as a regular in the national team during their unsuccessful qualifying campaign for the 2010 FIFA World Cup, appearing in a total of nine matches.

[15] On 10 November 2013, Niko Kovač called up Pranjić to the national team after Ivan Strinić sustained an injury that made him ineligible for the 2014 FIFA World Cup qualifying play-offs against Iceland.