Dave Bolland scored two power-play goals, and the Blackhawks overcame the loss of star forward Patrick Kane in the opening minute and beat the Calgary Flames 4-2 on Sunday.Bryan Bickell and Jonathan Toews also scored power-play goals for the Hawks.Kane, the Blackhawks’ leading scorer last season with 88 points, sustained an undisclosed lower body injury 46 seconds into the game and didn’t return. He spun and fell awkwardly along the right wing boards while trying to avoid a check by Flames defenseman Cory Sarich. Kane skated off the ice with assistance and was escorted to the dressing room.Jarome Iginla and Anton Babchuk scored on the power play for the Flames. Babchuk’s goal was his first since joining Calgary in a trade from Carolina on Nov. 17.Corey Crawford started for the fourth time in five games and made 24 saves.Calgary’s Miikka Kiprusoff stopped 28 shots.The Hawks held a 3-2 lead after the first period, in which every goal was scored during a power play.Bickell put the Blackhawks ahead 1-0 at 4:14 when his shot from the slot sailed over Kiprusoff’s outstretched glove.Bolland’s connected during a 5-on-3 advantage midway through the period to make it 2-0. Standing at the left edge of the crease, Bolland redirected Toews’ cross-ice feed into a wide-open net.Iginla cut the Flames’ deficit in half with 6:54 left when he ripped in a shot from between the circles with Matt Stajan screening Crawford.Babchuk tied it 2-all with another screened goal just over three minutes later. He beat Crawford with a high shot while Calgary’s Olli Jokinen and Brent Seabrook were tied up in front of the crease.Toews batted in a loose puck from a goal-mouth scrum with 2:27 left in the first to restore the lead.Following a scoreless second period, the Blackhawks held on the third by killing four late power plays. Iginla’s shot with 3:40 left struck the right post.Bolland fired a power-play goal into an empty net to complete the scoring.

NOTES—Since joining the Blackhawks in 2007 after being chosen No. 1 in the NHL draft, Kane has missed only two games. He sat out twice in January 2009 with an ankle injury. Calgary RW Ales Kotalik played his first game of the season after missing 26 because of a knee injury. … Marian Hossa missed his third game with a lower body injury sustained Monday in practice. …Fernando Pisani’s upper body injury kept him out for a fourth game.