2009-10: Mitch Wheaton had 22 points in 25 games playing bantam AAA hockey for the Sherwood Park Flyers in suburban Edmonton. He was selected by Kelowna in the 10th round (207th overall) of the 2010 WHL Bantam Draft.
2010-11: Wheaton made the jump to the Sherwood Park Kings Midget AAA team as a 15-year-old. In 31 games he had 8 assists and 55 penalty minutes. The Kings reached the provincial semifinals. Wheaton scored his first goal of the season in the playoffs and had 16 penalty minutes in 10 playoff games.
2011-12: Wheaton joined the Spruce Grove Saints in the Alberta Junior Hockey League. After seeing limited ice time early in the year his ice time steadily increased. He finished the season with 7 goals and 7 assists in 45 games and had 62 penalty minutes. The Saints reached the playoff finals and Wheaton scored 1 goal with 2 assists in 11 playoff games.
2012-13: Wheaton went to training camp with the WHL's Kelowna Rockets before returning to Spruce Grove. After one game with the Saints he decided to forego college hockey and signed with Kelowna, where he spent the rest of the season. He skated in 39 games for the Rockets before suffering a shoulder injury that kept him out until the playoffs — scoring 1 goal with 7 assists and finishing +20 with 27 penalty minutes. The Rockets finished first in the B.C. Division and reached the second round in the playoffs. After missing the first round, Wheaton returned for the four-game series with Kamloops and was -2 with no points and 4 penalty minutes. Wheaton was ranked 69th amongst North American skaters in Central Scouting's final rankings prior to the 2013 NHL Draft.
Big body on Rockets blueline. Moves well laterally. Able to use long reach to stymie opponents. A stay-at-home defenseman. Seldom challenged by opponents. Hampered by serious shoulder injury this season.
Wheaton will begin his second season with the WHL's Kelowna Rockets in 2013-14.