The Anaheim Ducks have placed goaltender John Gibson on injured reserve with a groin injury. The 21-year-old is expected to miss the next six weeks.
A native of Pittsburgh, Gibson is 2-2-0 this season with a 2.28 goals against average and a .927 save percentage.
The 23-year-old Bobkov was the Ducks' third-round pick in the 2009 NHL Entry Draft. He has yet to appear in an NHL game.
The team also announced that goalie Frederik Andersen is day-to-day with leg tightness.
Andersen is 7-1 this season with a 1.60 goals against average and a .941 save percentage.
With the injuries, Jason LaBarbera started in net during the Ducks' 3-2 win on Sunday over the Colorado Avalanche. Goalie coach Dwayne Roloson was forced to dress as the team's back-up.
The Ducks are next in action on Wednesday night when it hosts the New York Islanders.