Career
National championships
2005 – men"s singles
2006 – men"s singles & mixed doubles
2007 – men"s singles
2010 – men"s singles
2011 – men"s singles, men"s singles double & mixed doubles
2012 - men"s singles & mixed doubles
2013 - mixed doubles
International tournaments
= 2004 5th on Slovak Open
5th on Europe Cup
= 2006 1st on Hatzor Israel International
2nd on Romania International
17th on World Championships
17th on European Championships
= 2007 1st on Syria International
9th on Bitburger Open
17th on United States Open
Petric played the 2007 BWF World Championships in men"s singles, and was defeated in the first round by Pablo Abián, of Spain, 21–9, 29–27. = 2009 3rd on Croatian International
3rd on Slovenia International
= 2011 3rd on Victor Slovak Open 2011.