‘The Bruins’ increasingly important defenseman, however, does admit he remains especially motivated when he faces the Buffalo Sabres, who never tried to keep him after drafting him in 2002. “Yeah, a little bit,” Wideman said on the eve of Wednesday’s game at HSBC Arena, the fourth of six Boston-Buffalo clashes this season. “I was a lot different then than I am now, but it’s still fun to play against them. I know a lot of guys from going to their training camps, so it’s still fun for me to go up against Buffalo.”’