2008-09: Graovac scored 13 goals with 18 assists in 26 games for the Mississauga Reps minor midget team. Graovac was selected by the Ottawa 67's in the third round of the 2009 OHL Priority Draft.
2009-10: Graovac made his OHL debut as a 16-year-old and skated in 52 games for the Ottawa 67's. Graovac scored 2 goals with 7 assists and was -6 with 17 PMs. Ottawa finished first in the East Division, advancing to the second round of the playoffs. Graovac skated in all 12 playoff games and was -3 with no points and 2 PMs.
2010-11: In his second OHL season with Ottawa Graovac scored 10 goals with 11 assists in 66 games before suffering a fractured arm in March that ended his season. Playing a lower line role on a team with one of the top lines in major junior, he was -4 with 10 PMs. Ottawa finished first in the East Division but were swept by Sudbury in a high-scoring first-round playoff series. Graovac was ranked 120th amongst North American skaters in Central Scouting's final rankings and was selected by the Wild in the seventh round (191st overall) of the 2011 NHL Draft.
2011-12: Graovac was an effective supplementary scorer in a lower line role for a talented Ottawa 67's team in his third OHL season. He played a big role in the playoffs as Ottawa reached the OHL semifinals. Despite missing time mid-season due to concussion issues, he scored 8 goals with 19 assists in 50 regular season games and was plus-six with 31 penalty minutes as Ottawa finished first in the East Division. Graovac scored 4 goals with 6 assists in 18 playoff games and was plus-two with 12 penalty minutes.
A lanky centerman with decent skills overall. Needs work on his defensive game.
Graovac has been growing into his role as a second line center for the Ottawa 67s, but has been hampered by a concussion.