2010-11: Sefton improved his overall game in his second season in the OHL with the Sudbury Wolves and his draft year. He scored five goals along with six assists and a minus eight rating while taking 124 PIMs (12 fighting majors) in 66 games. Sefton and the Wolves swept the Ottawa 67's in the first round of the OHL playoff but were swept themselves in the second by the Mississauga St. Michael's Majors. He contributed only an assists but was a solid plus one rating in the eight games.
2011-12: Sefton had a good third season in the OHL with Sudbury even though the team was not very good this year. He scored three goals along with 16 assists and a good minus three rating while taking 142 PIMs (11 fighting majors) in 63 games. Sefton and the Sudbury Wolves were easily swept 4-0 in the first round of the Playoffs by the Brampton Battalion. The big physical defenseman struggled with a minus seven rating while taking only eight minutes in penalties and being kept off the score sheet for the series.
Sefton is a tough, physical defensive defenseman but he will need to show more offensive game to get an entry level contract from the Sharks. The big defenseman needs to improve his skating; pivots, stride lengths and better balance along with working on making quicker outlet passes. The Sharks' organization has many big defensemen of his type so he has to bring more to the table but he's still young enough to improve his overall game at the junior level.
Sefton will have another year of development at the junior level in the OHL and hopefully with an improved Sudbury team. He will be expected to bring more leadership, character and more offensive punch to his game for the Wolves this coming season.