Mike Conley helped out with 19 points as the Grizzlies, who hold the fifth seed in the Western Conference, logged a second straight victory.
Zach Randolph chipped in with 14 points and seven rebounds for Memphis.
The Timberwolves, playing without center Nikola Pekovic due to a sprained left ankle, fell despite 23 points, 10 rebounds and nine assists from Ricky Rubio.
Derrick Williams put in 19 points for Minnesota.
Former Titans kicker dies in car crash
UPI Sports Results for September 20, 2014