The Slugger's Wife(1985)

When baseball player Darryl Palmer falls in love with a singer named Debby, he repeatedly asks her out and each time he fails to get a date, his performance in his next game suffers. Eventually, Darryl and Debby do become a couple, his average goes up, and they get married. But Debby finds herself bored with marriage and baseball, and leaves to pursue her singing career. In response to the breakup, Darryl's career begins to slump, but after some time apart, the two decide to try to repair their marriage.