The second-year shooting guard is day to day.
Orton didn't appear in a preseason game.
Rice sustained the injury at the beginning of the third quarter
Wittman believes the NBA should stick with 48-minute games.
The Wizards are shooting 68.2 percent at the free throw line through four preseason games.
Coach Randy Wittman was pleased with his second unit's performance down the stretch Sunday.
The shooting guard injured his left wrist Friday against the Hornets.
Beal sprained his left wrist in the second quarter.
Humphries lacerated the hand on the rim Monday against the Bulls, another early blow to the team's front-court depth.
The Wizards have committed 39 turnovers in two preseason games.