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).