Cardinals signed RHP Carlos Villanueva to a minor league contract with an invitation to spring training.
Carlos Villanueva will start for the Cubs on Saturday against the Nationals in Washington.
Carlos Villanueva will be moved to the bullpen.
Carlos Villanueva struggled again in Friday’s loss to the Brewers, surrendering five runs on 11 hits over his five frames.
Carlos Villanueva was hit hard again Sunday, giving up five runs on nine hits over 4 2/3 innings in a loss to the Reds.
Carlos Villanueva was rocked for nine runs over three innings in Saturday's loss to the Cardinals.
Carlos Villanueva held the Phillies to one run over five innings to earn the win in his first start Sunday.
Cubs manager Rick Renteria confirmed Saturday that Carlos Villanueva will start against the Phillies on Sunday.
Carlos Villanueva could be scratched from Sunday's scheduled start against the Phillies after appearing in relief on Monday and Wednesday.
Cubs fifth starter Carlos Villanueva took his second loss in two games after giving up a run in the 16th Wednesday.
Carlos Villanueva will be the Cubs' fifth starter to begin the season.
Carlos Villanueva is expected to open the season in the Cubs' rotation while Jake Arrieta (shoulder) is on the disabled list.
Carlos Villanueva is moving back to the bullpen.
Carlos Villanueva allowed four runs over six innings in a no-decision against the Cardinals on Saturday.