Hamilton's initial 10-day contract expires Monday.
The shooting guard/small forward sustained a sprained right ankle in the third quarter of Sunday's loss to the
"Hamilton is walking; there he is," said Rivers as Hamilton walked onto the court at the team's practice facility Monday. "He's better than we thought, so that's good."
Rivers, however, did not provide a timetable for his return.
Hamilton has averaged four points and 1.4 rebounds in 9.5 minutes over eight games.
Reserve guard Nate Robinson's 10-day contract expires Tuesday. When asked if the Clippers will re-sign him, Rivers seemed less certain than he was about Hamilton.
"We probably will, but I haven't clearly decided," Rivers said.
Robinson has averaged four points, 1.4 rebounds and two assists in 14.6 minutes a game over five games.
The Clippers need all of the help they can get while shooting guard