Myisha Hines-Allen scored 17, Leilani Mitchell added 12 and Emma Meesseman 10 as Washington (3-0) built a seven-point lead in the first quarter and opened up an 18-point lead by halftime with a 29-18 scoring surge in the second period.
Breanna Stewart finished with 15 points and 10 rebounds for Seattle (2-1). Sami Whitcomb pitched in with 11 points.
SPARKS 81, SUN 76
BRADENTON, Fla. (AP) — Chelsea Gray had 15 points and six assists, Candace Parker scored 10 points, grabbed 11 rebounds and blocked three shots, and Los Angeles beat Connecticut.
Nneka Ogwumike scored 14 points and Seimone Augustus 13 for the Sparks (2-1).
DeWanna Bonner had 34 points, 14 rebounds, and five assists, and Alyssa Thomas 10 points, 18 rebounds and six assists, for Connecticut (0-3).