EXTRA BASES

Former Cardinals’ first-rounder Shelby Miller signed a major-league deal with the Texas Rangers to possibly join former teammate Lance Lynn in the Rangers’ rotation this season. The Cardinals explored Miller’s health and a possible reunion, though their preference seemed to be offering a minor-league deal, in part because the 40-man roster is full. Miller was able to score a better offer and a guarantee from Texas. … The Cardinals made a series of promotions and title changes for members of the front office, and they announced the creation of a position for manager Mike Shildt’s staff. Joey Prebynski will serve as “Major League Game Plan Coach,” and his role will be as a liaison between the clubhouse and the analytics department to help organize and coordinate some of the data and scouting metrics that Shildt and his staff intend to use more aggressively in 2019. … Adam Olsen, the Cardinals’ head trainer, has been promoted to the director of medical operations. … The Cardinals also made official Jose Oquendo’s hiring as a minor-league instructor. He will work with infielders throughout the organization and he will be based in Jupiter, Fla. … To fill an opening on the scouting staff created by Marty Keough’s retirement, the Cardinals hired Chris Bourjos, a longtime and respected scout who is also the father of center fielder Peter.