Diaz served as the designated hitter and went 1-for-2 with a double and two RBI in Tuesday's 4-2 win over the Red Sox.
Diaz delivered a pair of runs with a second-inning double to kick off a four-run inning for the Rangers. The catcher has been productive in September and could see more opportunities at DH as the Rangers compete for a postseason berth. Diaz has an .805 OPS with nine RBI over 11 games this month.