The Wizards waived Rice last Wednesday.
Rice lost his spot in the rotation and was inactive Wednesday.
The play occurred with 5:45 remaining in the fourth quarter of Washington's 98-83 win Tuesday.
The backup big man wants to send a message to the team that eliminated Washington from last season's playoffs: "If you’re going to beat us you’re going to have to leave some blood on the ground."
Humphries (hand) and Rice (ankle) practiced Tuesday in advance of season opener.
A quick refresher of the team's reserves heading into Wednesday's season opener.
Kris Humphries and Glen Rice Jr. were full participants in practice Monday.
Guard sprained his right ankle Wednesday against Maccabi Haifa.
The second-year shooting guard is day to day.
Coach Randy Wittman was pleased with his second unit's performance down the stretch Sunday.