The hot corner has been a revolving door of late, with Turner, Juan Uribe and Alex Guerrero each starting two of the previous six games. Uribe started 15 of the first 21 games of the season, missing two with hamstring tightness, but has started only four of the last 13 games at the position.
A healthy Uribe hasn't started since Friday night in Colorado.
"Third base this year has been a little bit like the outfield last year, trying to figure out that spot," manager Don Mattingly said on Tuesday. "It makes it tough to try to find a spot to get all these guys in."
Jimmy Rollins also sits, with Kiké Hernandez starting at shortstop. This is the fifth non-start in 33 games for Rollins.
"It's more of a day for Jimmy. We're trying to continue to periodically give him days off," Mattingly said Wednesday. "We sit here with really no true shortstop other than Jimmy, so we just want to make sure he stays strong."
Rollins went 2-for-6 on Tuesday, but is still hitting just .174/.257/.298 on the season.
"Jimmy's been swinging good, and I don't think the day off will break his momentum," Mattingly said.
Guerrero starts in left field.
The only player in either starting lineup to have faced one of Wednesday's starting pitchers is Howie Kendrick, who is 3-for-9 with three singles and three runs batted in against Jarred Cosart.