Washington's Emeka Okafor dominated inside as the improving Wizards stunned the Chicago Bulls 86-73 to record their fifth straight home win on Saturday.
At 11-31 Washington have the second worst record in the NBA, ahead of only Charlotte (11-32), but turned the tables on joint Central Division leaders Chicago (26-17) behind Okafor's 15 points and 16 rebounds.
It was the seventh win in 10 games for the Wizards, who started the season 0-12 and lost 28 of their first 32 games.
Nene added 16 points and John Wall 15 for Washington.
Only reserve Nate Robinson finished in double figures for Chicago, collecting a game high 19 points.
The Wizards went on an 11-0 run late in the second quarter to establish a six-point halftime lead, before a 10-2 spurt to start the third put them firmly in command.