2009-10: Ryan Sproul played for two OJAHL teams during this season. In 7 games for the Bramlea Bulls, he picked up 1 assist. In 8 games for the Vaughn Vipers, he scored 1 goal and added 1 assist for 2 points. Sproul was chosen in the fourth round, 49th overall, of the 2010 USHL Entry Draft by the Tri-City Storm.
2010-11: Sproul began the season with the Vaughn Vipers, but joined the OHL's Sault Ste. Marie Greyhounds after 3 games with the Vipers. In 61 games for the Greyhounds, Sproul scored 14 goals and added 19 assists for 33 points.
2011-12: Sproul signed an entry-level three-year contract with Detroit in March 2012 following his second junior season with Sault Ste. Marie. He was the third-leading scorer for the Greyhounds and was third amongst all OHL defensemen with 54 points. He scored 23 goals with 31 assists and was plus-16 with 53 penalty minutes in 61 games for the Greyhounds. After a tight three-team playoff race down the stretch, Sault Ste. Marie finished fifth in the West Division, one point behind Windsor for the final spot.
2012-13: Sproul made his pro hockey debut, joining Detroit AHL affiliate Grand Rapids in April after his third OHL season with Sault Ste. Marie. He had no points and was -1 with 2 penalty minutes in two games with the Griffins. Grand Rapids went on to win the Calder Cup but Sproul did not see any playoff action. He skated in 50 OHL regular season games, missing six weeks after suffering an arm injury in October, and was the Greyhounds second-leading scorer behind forward Nick Cousins (Philadelphia). He scored 20 goals (11 on the power play) with 46 assists and was an even plus/minus with 45 penalty minutes. The Greyhounds were second in the West Division and faced Owen Sound in a first round playoff series. Sproul scored 2 goals with 3 assists and was -4 in six playoff games.
Sproul boasts tremendous offensive instincts, can quarterback a powerplay, and no longer is knocked for his skating ability or defensive skills. He has shown vast improvement since being drafted. Sproul has the offensive instincts and playmaking ability to one day play his way onto the Red Wings' blue line.
After being named the 2012-13 CHL Defenseman of the Year, Sproul will make the leap to the AHL and join the Grand Rapids Griffins in 2013-14.