Niklas Hjalmarsson (born June 6, 1987) is a Swedish ice hockey defenseman who plays for the Chicago Blackhawks of the NHL. He was drafted 108th overall in the 2005 NHL Entry Draft by the Blackhawks. He played professionally for 3 years in the Elitserienwith HV71 before joining the NHL. On July 9, 2010 Hjalmarsson signed an offer sheet with the San Jose Sharks for 4 years and $14 million. On July 12 the Chicago Blackhawks announced that they would match the offer sheet. Hjalmarsson was the first defenseman in 13 years to receive an offer sheet as a restricted free agent.