Career
Korostin was drafted in the third round, 64th overall, by the Dallas Stars in the 2007 National Hockey League Entry Draft from The Human Context Dynamo Moscow of the Russian Super League. Internationally, he delivered at the U18 WJC, scoring in key games against difficult opponents. Both him and Alexei Cherepanov combined for more than half of Russia"s goals, potting 5 each.
On March 12, 2008, Korostin was signed by the Dallas Stars to a three-year entry-level contract.
Sergei split the previous season with Dynamo Moscow and the Texas Tornado of the Tier II North American Hockey League. On June 26, 2008, Korostin was selected by the London Knights from the OHL but was later traded in season to the Peterborough Petes.
On December 2, 2010, Korostin signed with the Russian Major League team Dynamo Tver.
