Drew Stafford is expected to miss two games with a mild groin injury, leaving the Buffalo Sabres down yet another top-line forward in their bid to climb back into playoff contention. Coach Lindy Ruff listed Stafford as day to day Wednesday, a day after he was hurt in a 2-1 overtime win over Montreal. Stafford played only two shifts before leaving in the first period. The initial prognosis was good news of sorts for Ruff. His team, after all, is already minus center Derek Roy, who will miss the rest of the season after tearing his left quadriceps tendon last month. "It is a relief," Ruff said. "He's walking fine and his strength is pretty good. So, all that bodes well for coming back quickly." Ruff called it doubtful that Stafford will play at Boston on Thursday or the following day, when the Sabres host the New York Islanders. There's a possibility Stafford could return for Buffalo's game at Long Island on Sunday. Read more: http://sports.espn.go.com/nhl/news/story?id=6037661