2009-10: Nicolas Petan was a dominant scorer for the North Shore Winter Club bantam team in British Columbia. He scored 76 goals with 63 assists in 57 games in PCAHA play and led the club to a fourth-place finish in the Western Canada bantam championships. Petan was selected by Portland in the first round (16th overall) of the 2013 WHL Bantam Draft.
2010-11: Petan played three regular season games and seven playoff contests for Portland as a 15-year -old and skated for the Greater Vancouver Canadians in the British Columbia Midget Major League. He had 1 assist and was plus-one in the regular season for the Winterhawks and had no points or penalties in limited playoff ice time. Petan scored 19 goals with 30 assists and had 36 penalty minutes in 35 games for the Canadians and scored 3 goals with 3 assists and 18 penalty minutes in six BCMML playoff games. Petan was the second-leading scorer for gold medal-winning Team British Columbia at the Canada Winter games; finishing with 4 goals and 8 assists in 12 games.
2011-12: Petan had 35 points in 61 games as a WHL rookie for a veteran-dominated Portland team with several NHL prospects and played for Canada Pacific in the 2012 U17 World Hockey Challenge. He scored 14 goals with 21 assists and was plus-seven with 22 penalty minutes. The Winterhawks had the WHL's third best record and reached the playoff finals; losing to Edmonton in Game 7. Petan was scoreless and minus-two with 4 penalty minutes in 22 playoff games.
2012-13: Petan won a gold medal with Canada's U18 team in the 2012 Ivan Hlinka Memorial Tournament before returning to Portland for his second season. He was part of the WHL's top line, skating along side NHL prospects Ty Rattie (STL) and Brendan Leipsic (NSH). Petan led the WHL with 74 assists and shared the overall points title with Leipsic, finishing with 120 points in 68 games. His 46 goals were fourth-most in the WHL behind Leipsic (49), Rattie (48) and Saskatoon's Josh Nicholls (47). Portland had the league's best record, finishing first in the U.S. Division, and captured the playoff title after reaching the WHL Finals for the third straight season. In 21 playoff games Petan scored 9 goals with 19 assists and was plus-13 with 16 penalty minutes. In five games at the Ivan Hlinka tournament he scored 1 goal with 1 assist and had 2 penalty minutes. Petan was ranked 33rd amongst North American skaters in Central Scouting's final rankings prior to the 2013 NHL Draft.
Offensively gifted with high-end skating skills. Size might prove detrimental, though Petan has played “big” throughout his career. Quick release. A slick passer of the puck.