Celtics guard Derrick White dribbles down the green court, in place for the NBA Cup, at TD Garden. The Jays’ tunnel fashion followed that same vibe. Both Brown and Tatum stepped out in matching, head-to-toe black and gray, making a joint statement in an ...

The Boston Celtics might not have Jayson Tatum when the team tips off the NBA Cup against the Atlanta Hawks on Tuesday night.

On Tuesday night, Boston Celtics head coach Joe Mazzulla walked into his pregame press conference with a sweatshirt that featured the word “MINDSET” in a large, bold font. He donned the same sweatshirt after the Celtics were stunned by the shorthanded Atlanta Hawks,

The Celtics will play their second game in as many days when they visit the Nets on Wednesday night. You could have argued that this is a potential letdown spot for the Celtics after their In-Season Tournament home opener against the Hawks, but Boston lost in a stunner Tuesday.

The Nets are coming off an impressive victory at the Pelicans in which plenty of players stepped up for a team looking for a win to end its three-game road