After recording 36 points in the regular season, a career high, Reinhart won the 2012 WHL Playoffs with the Oil Kings.

[1] Reinhart was selected fourth overall by the New York Islanders, in the 2012 NHL Entry Draft[2] and signed a three-year entry-level contract with them on August 2, 2012.

[7] The Oil Kings also named Reinhart and teammate Cody Corbett co-winners of the team’s Top Defenceman award.

[9] Although Reinhart spent the majority of the 2014–15 season with the Islanders AHL affiliate, the Bridgeport Sound Tigers, he made his NHL debut on October 10, 2014, against the Carolina Hurricanes.

As a free agent into the 2020–21 season, Reinhart belatedly joined German club, Iserlohn Roosters of the DEL, for the remainder of the campaign on February 12, 2021.