A couple of years ago, the Boston Celtics looked like an unshakeable team. Success was rewarded by keeping the core intact. But after last season’s playoff performance, key pieces like Kristaps Porzingis, Jrue Holiday, and Al Horford are all gone. Then, Jayson Tatum is still rehabbing. Last season, these players, including Jaylen Brown, started 281 games, and over the past two seasons, they combined for 584 starts. Now, at the start of the season, the Celtics are missing a core group that used to bring a lot of experience. So, Boston has to figure out a new lineup without that veteran continuity.

Celtics insiders Noa Dalzell and Bobby Manning were on the ground at the Celtics’ training camp on Day 3, giving fans a first look at what could be the team’s final starting five. Manning then n

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