Even without their two biggest stars, however, the Wizards beat the Pacers 117-110 to eliminated the Pacers from playoff contention.
Foster bruised his right knee in Saturday's 107-103 loss to Charlotte. Pacers coach Jim O'Brien said he expects Foster to be available for Wednesday's regular season finale against New York.
Butler missed his second consecutive game with a sore knee, while Arenas had a precautionary day off. Arenas has been playing limited minutes as a reserve since returning from knee surgery.
The Wizards also played most of the second half without DeShawn Stevenson, who left the game after the first possession of the third quarter with a sore back.
Like Arenas, Indiana's Jermaine O'Neal has also been playing off the bench since returning from a knee injury, leading to some interesting pregame comparisons by the two coaches.
"We both have a pretty good player coming off the bench," O'Brien said. "If they did it permanently, they'd probably compete for sixth man of the year."
But Washington's Eddie Jordan took a dig at O'Neal when he showed a clear preference for Arenas.
"It's the same sort of thing, but I like to have that speed and quickness -- rather than that slow, plodding, post-up guy," Jordan said.
Jordan paused, then quickly added: "But he's a great player."