Suggs had six points in 11 minutes before landing hard on a drive to the basket in the second quarter. He did not return to the NBA summer league game in Las Vegas.
Sam Hauser scored 21 points while making six of nine 3-pointers as the Celtics enjoyed a hot shooting night from long range in their third consecutive win.
The Celtics made 19 3s.
Tahjere McCall led Orlando with 12 points.
The Associated Press contributed to this report.