Maya Moore scored 20 points and Lindsay Whalen added 19 to help the Minnesota Lynx clinch their third consecutive Western Conference title with a 73-60 victory over the Seattle Storm on Tuesday night.
Monica Wright added 14 points for Minnesota (25-7), which won its seventh straight game.
The two teams will face each other again next week in the best-of-three first-round series since Seattle already had clinched the fourth and final seed.
Moore hit 7 of 10 shots from the field and Whalen 7 of 9. The Lynx pulled away from Seattle with a 23-14 run in the second quarter.
The Lynx beat Seattle in the first round last year. They won the WNBA title in 2011.
Tanisha Wright led Seattle (15-17) with 14 points. Tina Thompson had just five points and shot 2 of 8 from the field.