All right, let's make it clear that we aren't throwing a pity party for the Celtics, who currently own a 29-9 record, the No. 3 spot in the Eastern Conference, and an 10.5-game lead in the Atlantic Division. But the defending champs certainly have questions after going 2-7 in their last nine games that has dimmed the glow of a franchise-record 19-game winning streak.

Here are five things that have gone wrong recently.