The Pacers cut the Wizards' 22-point lead to three before falling, 97-90.
In a meeting of 4-1 teams, the Wizards head north of the border for a meeting with the Raptors.
The Wizards' four wins have come against teams with a combined record of 6-14.
The Wizards won ugly against the depleted Pacers on Wednesday.
Wall has three straight double-doubles to begin the season, and wouldn't take the bait when provoked by Bucks.
The Wizards scored 17 points off 18 Magic turnovers.
Wall was held to 3-of-9 shooting and two assists in the second half.
The Wizards were outrebounded and surrendered 35 points in the fourth quarter.
The Wizards open the season tonight in Miami.
The Wizards' starting lineup will be without Bradley Beal to begin the season.