Rudy Gay and Tyler Hansbrough both scored 17 points to lead the Toronto Raptors to a 97-89 preseason victory over Boston on Monday night in Celtics’ coach Brad Stevens’ NBA debut.

DeMar DeRozan had 13 points and Terrence Ross added 12 for the Raptors.

Gerald Wallace led the Celtics with 16 points, and Jared Sullinger had 14 with six rebounds.

The 36-year-old Stevens was hired in July after a successful run at Butler University.

“Really, really different just because it’s a 48-minute game, something to get used to because of the timeouts,” Stevens said. “It’s a little unique and different. There’s eight more minutes (than college) and a lot more possessions because of the 24-second shot clock. Hopefully I’ll get used to it in seven (preseason) games, but hopefully it doesn’t last much longer than that. But it is different. It’s unique.”

The Celtics had seven new players, mainly due to a blockbuster deal that sent likely future Hall of Famers Paul Pierce and Kevin Garnett to the Brooklyn Nets in a draft-night deal. GM Danny Ainge wanted to start rebuilding the team before the two became ineffective or retired.

Ainge also traded coach Doc Rivers to the Los Angeles Clippers for a first-round draft pick during the offseason.

The Raptors also made a big trade during the offseason, sending Andrea Bargnani to the New York Knicks in early July for three players and three draft picks.

The teams will face each other in the season opener in Toronto on Oct. 30.

Boston point guard Rajon Rondo is expected to miss at least the season’s first month after undergoing surgery for a torn ligament in his right knee last season.

“As a team, I felt like we moved the ball well,” said guard Avery Bradley, who will run the team in Rondo’s absence.