The Lynx shot better, had more rebounds and committed one fewer turnover in beating Seattle 78-70 on Friday.
But the biggest discrepancy was the play of the two veteran backcourts.
Lindsay Whalen scored 20 points, and Seimone Augustus 19 for the Lynx. They combined to make 13 of 28 shots and had 10 rebounds, seven assists and two steals.
Sue Bird, who started ahead of Whalen on the gold medal-winning Olympic team, and Tanisha Wright, had three more assists as a pair but had only 13 points on 5-for-8 shooting.
"I have a feeling, knowing Sue, she will respond and bounce back on Sunday," Storm coach Brian Agler said after the game.
The teams meet again Sunday night at Seattle's KeyArena, with the Lynx holding a 1-0 lead in the best-of-three Western Conference semifinal series.
In the first game the Lynx won -- as usual -- at home, improving their record at Target Center this season to 17-1. In the playoffs over two years, the defending WNBA champions are 6-0 in their arena.
Their latest triumph was a testament to grit, perseverance and teamwork. Beautifully flowing, awe-inspiring ball it was not, except for a play here and there. There were long stretches when neither team could score.