The Mariners (+36) lead the Majors in best run differential since the All-Star break.
Wedge said he sees improvement from last year at the plate from late July call-up Trayvon Robinson.
"He's seeing the ball better at home plate, no doubt about it," Wedge said. "He's staying in his swing longer, he's not getting all dragged out up there. So he's staying together with his swing, and it's helped him make better contact, fighting through ABs better."
The Mariners entered Saturday's contest having won 10 of their last 11 games at home, and are now 28-30 at Safeco Field.