The Buffalo Sabres ended overwhelming speculation Tuesday morning when they confirmed the club would be keeping teenager Mikhail Grigorenko at the NHL level. "Two things, really, that went into the decision … its his development in conjunction to his ability to help us win hockey games," GM Darcy Regier said Tuesday at the Sabres morning skate in advance of their tilt with the Leafs Tuesday night. In deciding to keep the 18-year-old on the roster, Regier also triggered the first year in Grigorenko's entry-level contract. The Sabres GM admitted that was a concern, given the abbreviated, 48-game season. Regier added that the decision would have been different had the season started in September. "It weighed a lot in the decision," Regier said.