Thursday Tape Breakdown: Sam Sheehan, Evan Valenti, and Matt Ignal are officially excited for the Celtics after a strong preseason showing.

0:30 Celtics ball-movement is extremely impressive

9:00 Celtics will be nightmares in transition

11:15 Jayson Tatum impresses on defense against Hornets

20:30 Are Celtics better than we thought?

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