sentences:  Among NHL rookies who had played at least half the season, Backes ranked 13th in points-per-game at 0.47.In 2007–08, he completed his first full season in the NHL, improving to 31 points (13 goals and 18 assists).Becoming a restricted free agent in the off-season, Backes signed a three-year, US$7.5 million offer sheet with the Vancouver Canucks on July 1, 2008.