qnli question: How many round-trippers did Rodriguez slug in his first season in Chicago? sentence: After the retirement of Sandberg and the trade of Dunston, the Cubs had holes to fill and the signing of Henry Rodríguez, known affectionately as "H-Rod" to bat cleanup provided protection for Sammy Sosa in the lineup, as Rodriguez slugged 31 round-trippers in his first season in Chicago.