Leilani Mitchell hit a 3-pointer from the baseline with 3.9 seconds left and the Phoenix Mercury edged the Los Angeles Sparks 94-91 in overtime on Sunday.
Candice Dupree passed to Mitchell who hit the game-winner as the Sparks defense collapsed on Brittney Griner. After a timeout, the Sparks were unable to get off a final shot after Erin Phillips appeared to dribble the ball off a defender's toe.
The 6-foot-8 Griner, who finished with 19 points and 10 rebounds for her second double-double in the four games she has played this season, dunked for the fifth time in her WNBA career. It was the 11th regular-season dunk in league history.
DeWanna Bonner scored 22 points to lead the Mercury (6-5), who shot 51 percent. Dupree added 21.
Nneka Ogwumike had 26 points and a season-high 19 rebounds, her third double-double this season for Los Angeles (2-8).
Phillips, who played for Phoenix last year, added 20 points, one short of her career high. Kristi Toliver, who scored a franchise-high 43 points in her last game, added 16. On their final possession in regulation, the Sparks missed two shots then threw the ball away with four seconds left. Griner missed a short jumper as time ran out with the score tied at 85.