Duo combines for 36 points against the Pistons.
Rookie remains sidelined with a hip injury.
“I wish there was a magic wand" to fix Washington's issues, Coach Randy Wittman says.
Wall says team will use the game to "get our chemistry down pat."
The Wizards reduced their roster to 17 after waiving Shavlik Randolph and Steven Gray, but they still have to make two more cuts before Monday's 5 p.m. deadline.
The rookie goes scoreless in 19 minutes and, as Coach Randy Wittman put it, "didn’t even know he was on the floor there."
Wizards lost their preseason finale in San Antonio, but the game was hardly meaningless with so many players trying to leave a final impression on Coach Randy Wittman.
Trevor Booker has provided an instant boost of emotion and energy since returning from a hamstring injury. He has scored 34 points in just 38 minutes in two preseason games, confirming his belief in himself.
The team commits to its youth movement, signing six first former first-round picks - John Wall, Trevor Booker, Kevin Seraphin, Jordan Crawford, Jan Vesely and Chris Singleton - through 2014.
Wizards falter late in loss to Toronto Raptors and after the game, Jan Vesely had to explain to John Wall who Jon Bon Jovi is.