2010-11: Reid Gardiner was the eighth player taken in the 2011 WHL Bantam Draft (by the Prince Albert Raiders) after appearing in four midget AA games with the Humboldt Broncos and putting up big numbers with the club's bantam AA team. He had 1 assist in his brief time with the midget AA squad and scored 50 goals with 24 assists in 24 bantam games.
2011-12: Gardiner made his midget major AAA debut with the Saskatoon Contacts as a 15-year-old and played for Canada in the 2011 Youth Olympic Games. He was the Contacts' fourth-leading scorer with 19 goals with 21 assists and had 47 penalty minutes in 36 regular season games. Saskatoon won the SMHL playoff championship after finishing second and defeated 2012 Telus Cup host Leduc, AB to capture a bronze medal. Gardiner scored 4 goals with 5 assists and 8 penalty minutes in eight playoff games and had 3 goals with 4 assists and 6 penalty minutes in seven games at the 2012 Telus Cup. In six games for Canada's U16 team at the YOG he scored 4 goals with 8 assists and was +9 with 4 penalty minutes.
2012-13: Gardner skated in 54 regular season games and four playoff contests in his first WHL season with Prince Albert and played for Canada Western in the 2013 U17 World Hockey challenge. He scored 7 goals with 13 assists and was +13 with 28 penalty minutes during the regular season for the Raiders. Prince Albert finished second in the East Division and Gardiner had 1 assist and an even plus/minus in the four-game playoff series with Red Deer. He scored 2 goals with 1 assist and 2 penalty minutes in five games as an assistant captain for Canada Western at the WHC.
2013-14: Gardiner increased his offensive production skating alongside fellow 2014 draft eligible prospect Leon Draisaitl in his second season with the Raiders. In his first 44 games he scored 20 goals with 17 assists and was +4 with 26 penalty minutes. He was ranked 40th amongst North American skaters in Central Scouting's mid-term rankings prior to the 2014 NHL Draft.
Gardiner is an intelligent player who is quickly becoming a complete forward. Physically capable and very strong on the puck. Works hard. Responsible defensively.