Blackhawks general manager Stan Bowman was on the phone all day Sunday, making calls in advance of Monday's NHL trade deadline. "We're talking to a lot of people," Bowman said. "I'm losing my voice here. I've been on the phone all day. You can't predict it. But we are aggressively trying to improve the team." Bowman said that the Blackhawks continue to pursue depth at two positions. "In a perfect world, you'd like to have a defenseman and a center," he said. "It's unlikely you're going to hit both those. We're working it on both fronts, because you don't know which one is going to come in your lap in the end."