Celtics Struggling?

Its hard to say a team is struggling when their current record is 10-4 which is not bad. I guess I should amend the statement by stating the Celtics have been struggling recently. Before their win against the Knicks last night, the Celtics lost 3 of their last 4 games. They were so dominating at the beginning and then they had a low period, which any team can have. However, they had to beat the Knicks in OT on a buzzer winning shot. The problem is the Knicks aren't very good, with a 3-10 record, so you wouldn't expect the Celtics needing to beat them at the buzzer. Meanwhile, the Lakers had an easy win against OKC last night. They have been looking good in 2 games since Gasol came back. One team I haven't really mentioned much this year is the Dallas Mavericks. They are playing well and are tied with the least amount of losses for the season with 3. They currently are tied with the Magic for current longest winning streak at 5.