Sorokin was the first goalie off at Wednesday's optional practice, Stefen Rosner of NHL.com reports, indicating that he's slated to start Thursday's home game against the Blackhawks.
Sorokin is set to start for the third time in the Islanders' first four regular-season games. Across his first two starts of the year, he went 1-1-0 with a 1.02 GAA and .968 save percentage.