After the Cardinals acquired outfielder Peter Bourjos in a trade with the Los Angeles Angels of Anaheim during the offseason of 2013, Jay's role on the club was expected to be reduced during 2014. Bourjos' impressive defensive ability was one of the main reasons of the trade, as Jay's 2013 defensive campaign was probably the worst of his career. But after a poor offensive April for Bourjos, Jay's playing time started to increase throughout the season, as Bourjos found himself on the bench more and more. By the end of the season, Jay finished batting .303, with three home runs while driving in 46 runs. Although appearing in only 17 fewer games in 2014 than in 2013, Jay had 135 fewer at-bats, and could not contend for the batting title, where at one point in September he was batting well over .320, which was higher than the final .319 batting average of Justin Morneau, who won the batting title. He led the major leagues in hit by pitch, with 20. During the postseason, where Jay had historically struggled throughout his career, he batted .478, going 14-29 throughout the NLDS and NLCS.