Simplify the following text for a Grade 9 native English-speaking person.
Original: Ivan Boldirev ( born August 15 , 1949 in Zrenjanin , SR Serbia , SFR Yugoslavia ( now Serbia ) ) is a retired NHL ice hockey center who played for numerous NHL teams .
Simplified: Ivan Boldirev ( born August 15 , 1949 in Zrenjanin , SR Serbia , SFR Yugoslavia ( now Serbia ) and raised in Sault Ste . Marie , Ontario ) is a retired Serbian-Canadian professional ice hockey center who played 15 seasons in the NHL from 1970 through 1985 .