Glory Johnson unloaded 22 points on the Sparks, and Candice Wiggins added 20, to help the Shock win 82-67.
Brittney Griner lead the Mercury over Japan, 87-64, with 18 points and eight rebounds.
The next preseason game isn’t until Tuesday.
Other WNBA news:
The Lynx headlined a business luncheon last week.
Mercury guard Samantha Prahalis stepped up her game and conditioning in the off-season.