Chone Figgins remains the leading candidate to handle the top spot in Seattle's order, but he didn't play on Monday and that led to Ackley's ascension.
Wedge said early in camp that Ichiro Suzuki would bat third this season and Figgins would get first crack at the leadoff role.
"We'll have [Ackley] hit there when Figgins isn't in," Wedge said. "He is one of the guys I thought about. I like it better with Figgins one and Ackley two, just because Ackley can drive the ball in the gap as well as anybody and we can score a quick run there.
"Obviously he's an option as a leadoff guy for us, too, but I'm hopeful we can settle him in that two-hole."