2009-10: Kenton Helgesen was selected by the Calgary Hitmen in the sixth round (132nd overall) of the 2009 WHL Bantam Draft, Helgesen played for the Grande Prairie Storm Midget AAA team in Alberta. In 35 games he had 9 assists with 54 penalty minutes.
2010-11: Helgesen returned to Grande Prairie after attending the Hitmen's WHL training camp and played for the Storm in the Alberta Junior Hockey League. In 42 games with the Storm he scored 1 goal with 5 assists and had 39 penalty minutes. The Storm reached the playoffs after finishing fourth in the North Division. Helgesen skated in two of the five playoff games with no points or penalties.
2011-12: Helgesen skated in 58 games for Calgary in his first WHL season. He scored 3 goals with 11 assists and was plus-7 with 63 penalty minutes for the Hitmen. Calgary finished second to WHL champion Edmonton in the Central Division but fell to Brandon in a first round playoff series. In the five game series Helgesen was minus-three with 2 penalty minutes. He was invited to the NHL Draft Combine and ranked 64th amongst North American skaters in Central Scouting's final rankings prior to the 2012 NHL Draft.
2012-13: Helgesen skated in 70 games for Calgary in his second WHL season — finishing second only to Jaynen Rissling with 116 penalty minutes (six fewer than Rissling). He had 20 assists and was +22 for the Hitmen. Calgary finished second in the Central Division and lost to first-place Edmonton in the Eastern Conference finals. Helgesen played in three playoff games, suffering a broken hand while blocking a shot in the first round series with Swift Current, and was +1 with 1 assist.
Helgesen is a shutdown defenseman with a punishing physical edge to his game. He has no real offensive skill set to speak of except for a decent first pass. His real bread and butter comes in a physically bruising style of defense. He is not afraid to throw the body or drop the gloves and he has the size to do so at 6'3
Helgesen has had a solid junior career so far with the Calgary Hitmen and will have to continue his growth and dominance to be relevant at the next level. He has the potential to be a physically overpowering defenseman in a sixth or seventh role at the NHL.