Arenas scored 24 points in the opener but apparently hurt his wrist in the fourth quarter while fouling LeBron James. Arenas was already slowed by a surgically repaired knee.
He participated in Monday's shootaround with a wrap on his wrist. Arenas spent several minutes after the workout launching long shots, trying to win money from teammates betting he'd miss.
"He seems to be ready to go," Wizards coach Eddie Jordan.
Arenas, who missed 69 games during the regular season after having surgery on his left knee, did not speak to the media following the shootaround.
Arenas came off the bench in Game 1 with 3:24 left in the first quarter. One of the NBA's deadliest outside shooters, he ended the period by dropping a 35-footer in the final second, draining the shot with a flick of his wrist over an unsuspecting Delonte West.
Arenas followed that shot with a pair of 3s early in the second quarter as the Wizards built an 11-point lead they couldn't hold.
West knows he can't give Arenas any room to shoot.
"Once he steps in the gym, I don't think there is any shot that's out of his range," West said.
Arenas made 8-of-16 shots in Game 1. Jordan doesn't plan to start Arenas anytime soon, but that could change if the Wizards fall behind 2-0 in the best-of-seven series.
Cleveland and Washington are meeting in the opening round for the third straight year. The Cavaliers won in six games two years ago and swept the Wizards in four straight last year.