The 32-year-old righty was 6-7 with a 4.65 ERA for Cleveland. Ludwick, a 32-year-old outfielder, hit .281 with 11 home runs and 43 RBIs this season.
Cleveland sent cash to the Cardinals and Padres, and got minor league pitcher Corey Kluber from San Diego _ the 24-year-old righty led the Texas League in strikeouts. St. Louis also acquired minor league lefty Nick Greenwood from San Diego.
“We’ve been looking for a quality starting pitcher to add to our rotation for some time,” Cardinals general manager John Mozeliak said in a statement. “Westbrook is someone we’ve had our eyes on for a good period of time.”