By all accounts, the Celtics have gotten after it when it comes to training camp practices. The new-look C’s have talked extensively about pace and physicality, dropping little crumbs of information about what they might look like this season.

As the Celtics discover a new identity without Jayson Tatum , they also went through major offseason changes. That means a few familiar faces will mix with an interesting supporting cast, many of whom are trying to prove they can be NBA contributors.

The road starts for the Celtics this week with their first preseason game, set for 8 p.m. Wednesday against the Grizzlies in Memphis.

Here are four things to watch for as the Celtics open preseason play this week:

Physicality and pace

The Celtics sound like they’ve readied themselves for a mix o

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