Career
Sproul was drafted 55th overall by the Detroit Red Wings in the 2011 National Hockey League Entry Draft. Junior
During the 2011-2012 OHL season, Sproul was the third-leading scorer for the Sault Ste. Marie Greyhounds, and was third amongst all OHL defensemen with 54 points.
Sproul recorded 23 goals and 31 assists in 61 games for the Greyhounds.
During the 2012-2013 OHL season, Sproul was the Greyhounds second-leading scorer, and lead all OHL defensemen with 66 points. Sproul recorded 20 goals and 46 assists in 50 games.
Sproul was rewarded for his outstanding play during the season by being named to the OHL"s First All-Star Team. Sproul was awarded the Max Kaminsky Trophy as the most outstanding defenceman in the Ontario Hockey League.
Professional
On March 25, 2012, the Detroit Red Wings signed Sproul to a three-year entry-level contract.
After the Greyhounds were eliminated from the playoffs, Sproul joined the Grand Rapids Griffins for two regular-season games, making his AHL debut on April 20, 2013, in a game against the Lake Erie Monsters. During the 2013-2014 season, in his first full season with the Griffins, Sproul was the second-highest scoring defenseman on the team, recording 11 goals and 21 assists in 72 games. On April 13, 2014, Sproul made his National Hockey League debut for the Detroit Red Wings in a game against the Saint Louis Blues.