2008-09: Shane McColgan was the 13th player taken in the 2008 WHL Bantam Draft and made his debut with the Kelowna Rockets while playing the bulk of the season with the Los Angeles Jr. Kings midget squad. McColgan was with the Rockets over the Christmas holidays and in four regular season games he scored 1 goal with 2 assists, had a +3 plus/minus and was assessed 4 PMs. McColgan appeared in four playoff games during the Rockets' run to the WHL championship, including Game 2 of the finals against the Calgary Hitmen. He was -1 with no points or penalty minutes in the playoffs. In 24 games with the Junior Kings he scored 9 goals with 22 assists and had 34 Pms.
2009-10: McColgan scored 25 goals with 44 assists in 71 games with the Rockets. His 69 points were second only to defenseman Tyson Barrie (72) on Kelowna but his -15 plus/minus was a cause for concern. McColgan scored 8 of his 25 goals on the power play. In 12 playoff contests he scored 1 goal with 3 assists and was -5 with 22 PMs as Kelowna defeated Everett in a seven-game first round series before falling to Tri-City in the second round. McColgan was second to Red Deer's Ryan Nugent-Hopkins in the league's Rookie of the Year vote.
2010-11: McColgan missed three games early in the season after having his tonsils removed but bounced back to lead a balanced Kelowna scoring attack as the Rockets won the WHL's BC division regular season title. In 67 games, he scored 21 goals with 45 assists and was a much-improved +3 with 62 PMs. In 10 playoff games, McColgan was the leading scorer for the Rockets with 5 goals and 4 assists and was +5 with 8 PMs. Kelowna, after sweeping Prince George in the first round, fell to Portland in a six-game series. McColgan was ranked 125th among North American skaters by Central Scouting in the final rankings and selected by the Rangers in the 5th round (134th overall) of the 2011 NHL Draft.
2011-12: McColgan made his pro debut — skating in five games for AHL Connecticut following his third junior season with Kelowna. He had no points and was minus-two in limited ice time with the Whale. McColgan was the leading scorer for the WHL's Rockets while playing an abrasive style – racking up 85 penalty minutes. He scored 18 goals with 46 assists and was minus-18 in 70 games. Kelowna faced Portland in a first round playoff series after finishing third in the BC Division. McColgan had 2 assists and was minus-one in the four game series.
McColgan is a small, speedy winger, with an edge to his game. A fiery player, McColgan backs down from no-one. But he can be very inconsistent and undisciplined, which he must reign in to move to the next level.