Kendrick Perkins was back on the court for his first contact practice prior to Saturday's pre-season game against the Rockets. From the Globe:

The Celtics are getting into a regular-season mode. Center Kendrick Perkins was involved in his first contact practice of the preseason before the game, and the rest of the team's starters played much of the first half and into the second half of a 90-89 win over Houston in Manchester, N.H., Saturday night.