LOS ANGELES -- Boston Celtics guard Marcus Smart lacerated his hand on glass at the team hotel and will miss Wednesday's game against the? Clippers. Celtics coach Brad Stevens said the team is investigating how Smart, who went to a hospital to get stitches, injured himself on Wednesday afternoon. "He lacerated his hand on glass in the hotel, got stitches. I don't know the full story," Stevens said. "We're learning more about that. [Assistant general manager] Mike Zarren and [assistant athletic trainer] Brian Dolan were with him at the hospital two hours ago [when Smart] got stitches. It doesn't sound like a long-term injury, but we're doing more research on how it happened." Pressed on why the team was investigating the incident, Stevens added, "Obviously, I want to make sure that I'm thorough in telling you how it happened and what happened. But, again, I think that he cut his hand in the hotel on glass sometime this afternoon." The Celtics also will be...