Kristaps Porzingis participated in parts of Friday's practice -- the Boston Celtics' first since advancing to the NBA Finals earlier this week -- and coach Joe Mazzulla said he's pleased with the center's recovery from a right calf strain.

"He's getting better," Mazzulla said at the team's facility. "He's out there shooting. Went through a couple of drills in practice. So, progressing well and kind of confident where he's at right now."