2009-10: The Ottawa 67's first pick (16th overall) in the 2009 OHL Priority Draft, Cody Ceci skated in 64 games as an OHL rookie and represented Ontario in the U17 World Hockey Challenge. He scored 4 goals with 8 assists and was plus-3 with 12 penalty minutes as Ottawa finished first in the East Division. In 12 OHL playoff games Ceci had 3 assists and was minus-1. He was scoreless in six games for Team Ontario at the WHC.
2010-11: Ceci was one of two players to skate in all 68 games for the Ottawa 67s and represented Canada at the 2011 U18 World Junior Championship. He scored 9 goals with 25 assists and was plus-11 with 28 penalty minutes. Ottawa finished first in the East Division but were swept by Sudbury in the first round of the playoffs. In four playoff games Ceci had 2 assists and was -5 with 4 penalty minutes. In seven games for Canada at the U18 WJC, he was plus-3 with 1 assist. Canada advanced to the bronze medal game, losing to Russia.
2011-12: Ceci was the OHL's second-leading scorer amongst defensemen (60 points) and was also invited to the tryout camp for Canada's U20 squad in his third OHL season. In 64 games he scored 17 goals with 43 assists and was +21 with 14 PMs. The Ottawa 67's finished first in the East for the third straight season. In 18 playoff games he scored 2 goals with 13 assists and was plus-one. Ottawa advanced to the conference finals before falling to Niagara in five games. Ceci was ranked sixth amongst North American skaters in Central Scouting's final rankings prior to the 2012 NHL Draft.
2012-13: Ceci signed a three-year, entry-level contract with the Senators in August 2012 and made his pro hockey debut with Ottawa's AHL affiliate in Binghamton in April 2013 following his fourth OHL season. He scored 1 goal with 1 assist and was +2 in three AHL regular season games. The Senators were second in the East Division and had the AHL's fourth-best record before being swept by Wilkes-Barre/Scranton in a first round series. Ceci was -1 with no points nor penalties in three playoff games. His final season of junior hockey was challenging. A team captain for the Ottawa 67's when the year started, he was traded to Owen Sound with the 67's floundering in last place. In 69 games between the two teams he scored 11 goals with 29 assists and was -8 with 12 penalty minutes. Owen Sound finished second in the Midwest Division and reached the second round in the playoffs. Ceci scored 1 goal with 9 assists and was -8 in 12 playoff games.
Ceci has developed into a good defensive defeseman with some definite offensive skills, evidenced by the fact that he has played a prominent role on both the power-play and penalty-killing units for the Ottawa 67's. Ceci has the size to compete with the bigger players in the NHL, although he may not always use that size effectively. Ceci is a potentially complete package who could have a fair amount of upside to his game.