2009-10: Jaedon Descheneau played for the Leduc Oil Kings bantam AAA team in Alberta. He was selected by Kootenay in the third round (62nd overall) of the 2010 WHL Bantam Draft.
2010-11: Descheneau averaged a point-per-game skating for the Leduc Oil Kings midget AAA team and competed for Team Alberta in the 2010 U16 Canada Winter Games. He scored 15 goals with 20 assists and 40 penalty minutes in 31 regular season games and scored 7 goals with 10 assists and 2 penalty minutes in 17 playoff games for the Oil Kings. Descheneau scored 2 goals with 2 assists and had 22 penalty minutes in five games as Team Alberta captured a bronze medal.
2011-12: Descheneau played in 54 of 72 regular season games for Kootenay in his first WHL season and represented Canada Pacific in the 2012 U17 World Hockey Challenge. He scored 3 goals with 11 assists and was -7 with 24 penalty minutes as the Ice finished fourth in the Central Division. Descheneau had no points nor penalties in the four-game playoff series with Edmonton. In five games for Canada Pacific he had no points and 2 penalty minutes.
2012-13: Descheneau was the second-leading scorer for Kootenay in his second season with the Ice behind 2014 draft-eligible center Sam Reinhart. He scored 30 goals with 48 assists and was plus-9 with 22 penalty minutes in 69 regular season games. Kootenay finished fifth in the Central Division and lost to Edmonton in a first round playoff series. Descheneau had 1 assist and was minus-6 with 2 penalty minutes in five playoff games.
Descheneau is an undersized sniper who put up big numbers in junior hockey skating with forwards like Sam Reinhart (BUF), Luke Philp and Tim Bozon (MON) in Kootenay. A bit of a late bloomer, he will be hindered by his size at the pro level but if he can add strength and develop his physical game he could be an interesting player to follow.
Descheneau attended his first NHL training camp with St. Louis before being returned to Kootenay for his fourth WHL season in 2014-15. The leading scorer for an Ice team that was struggling to reach the .500 mark early in the season, he was scoring at a point-per-game pace heading into December. Small players who put up big numbers in junior hockey are not uncommon and many end up spending all or most of their careers playing minor league hockey or heading to Europe. The success of players like Tyler Johnson and former Buffalo first round pick Tyler Ennis in recent years made it worthwhile for the Blues to take a flier on Descheneau, particularly with a fifth-round pick in a draft that wasn't considered very deep.