Roman Kantserov not letting Blackhawks' losing ways weigh him down

RALEIGH, N.C. — Roman Kantserov’s last-minute goal Thursday against the Lightning was meaningless for the Blackhawks but significant for him.It extended his point streak to seven games — the longest by a Hawks rookie since Jonathan Toews in 2007 — and kept him atop the goal-scoring leaderboard among NHL rookies. He’s now at eight goals, just ahead of three high-profile first-round picks: Trevor Connelly, James Hagens and Gavin McKenna.Amazingly, however, the Hawks have won only one of the seven games during his streak. Kantserov has factored in nearly half — seven of 15 — of their goals during the stretch. His teammates barely are producing anything at all.‘‘Regardless of how it’s going for everybody else, it seems to be working for him right now,’’ fellow forward Ryan Donato said Thursday. ‘‘I hope we can help him out and . . . he can continue to stay hot, and then we can have another couple of guys get hot, as well.’’ GOAL: Roman Kantserov chips in a