Leilani Mitchell made five 3-pointers and finished with 23 points, and Yvonne Turner, who hit 4 of 5 from behind the arc, added a career-high 22 points for Phoenix (11-10).
Elena Delle Donne and Emma Meesseman scored 18 points apiece for the Mystics (14-7). They had won five in a row.
SPARKS 83, STORM 75
LOS ANGELES (AP) — Candace Parker scored a season-high 21 points, Nneka Ogwumike added 13 points, 10 rebounds and three steals and Los Angeles beat Seattle.
Maria Vadeeva, a 20-year old who missed two-plus months because of international duty for Russia and a knee injury, scored 14 points, for the Sparks (13-8). Sami Whitcomb and Alysha Clark each had 16 points for Seattle (12-11). The Storm have lost three straight.