Palumbo will start for the Rangers on Sunday, T.R. Sullivan of MLB.com reports.
Palumbo will take the place of Mike Minor, who is getting some extra rest prior to the All-Star break. Palumbo has drawn two previous starts with the Rangers this season, but he's experienced little success. Through six innings, he's racked up a 16.50 ERA and 2.50 WHIP with five strikeouts and three walks.