[2] After attending the Kings training camp, Prokhorkin was assigned to American Hockey League affiliate, the Manchester Monarchs.

He featured in 8 games with the Monarchs to begin the 2012–13 season, before opting to return to his original club, CSKA Moscow and terminate his contract with the Kings on 14 November 2012.

On 13 May 2019, Prokhorkin as a free agent signed a one-year, entry-level contract with draft club, the Los Angeles Kings.

[3] In his lone North American season in 2019–20, Prokhorkin was originally assigned to play with the Kings' AHL affiliate, the Ontario Reign.

[4] He was signed by Metallurg after his KHL rights' were earlier acquired from SKA Saint Petersburg in exchange for Vladislav Kamenev on 11 June 2020.