Allen added eight rebounds and four assists as Memphis not only won its fifth straight at home, but assured the Grizzlies (42-33) of their first winning season since 2005-06, the last time the team made the playoffs.
Mike Conley and Zach Randolph scored 20 apiece, with Conley also recording seven assists. Randolph had 13 rebounds and six assists as Memphis extended its hold on the final playoff spot in the Western Conference. Coupled with Houston's 108-97 loss to Philadelphia on Wednesday night, the Grizzlies now have a three-game buffer on the Rockets.
Monta Ellis and Dorell Wright each had 16 points as Golden State lost its eighth straight on the road. David Lee had 12 points and nine rebounds, and Vladamir Radmanovic had 11 points, all in the first half.
Stephen Curry was 2 of 14 from the field and 1 of 6 outside the arc for the Warriors, finishing with only six points. He did have nine assists.
Golden State, second in the league in 3-point shooting at 39.4 percent, were 6 of 21 from outside the arc (28.6 percent).
Meanwhile, Memphis, which leads the league in points in the paint, held an advantage there 76-50 and helped the Grizzlies shoot a season-best 56.5 percent on 48-of-85 shooting from the field.
Radmanovic led a rally by the Warriors bench to overtake an early eight-point Memphis lead. While the rest of the Warriors had misfired on their first six 3-pointers, Radmanovic was perfect on his initial three.
The Warriors were coming off an overtime loss at Oklahoma City on Tuesday night, but the Grizzlies were the ones who looked a tad lethargic in the half, getting beat on the boards and not forcing turnovers — two keys to their success.
Despite both teams shooting poorly at the start — combined they missed their first 11 shots — they ended the half above 53 percent.
The Grizzlies had a handful of steals in the third quarter, as Allen scored 10 points. Memphis used the energy to reverse Golden State's momentum and ended the quarter up 79-72. The Grizzlies then extended the lead to as many as 19 in the fourth quarter.
Notes: The Warriors' 91 points marked the first time in the last nine games of the series that both teams didn't reach at least 104 points. ... Lee entered with double-doubles in 20 of last 36 games. He fell one rebound short of another double-double. ... Randolph had 10 points in the fourth quarter. Memphis is 10-0 when he reaches double-digits in the final quarter. ... Memphis' previous high field-goal percentage for a game was 55.7 against Denver on Feb. 13. ... Memphis is 17-1 against teams playing the second night of a back-to-back, including 14-0 at home.