LOS ANGELES -- Boston Celtics guard Marcus Smart lacerated his hand on glass at the team hotel and missed Wednesday's 113-102 win over 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 before the game. "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...