The St. Louis Cardinals implemented a trio of middle infield moves on Tuesday. The spark was the placement of top prospect infielder Aledmys Diaz on the seven-day disabled list of the Double-A Springfield Cardinals.
To replace Diaz at Springfield, Matt Williams has been returned to the Texas League. Backfilling Williams at A-Advanced Palm Beach is Bruce Caldwell, promoted from extended spring training, nearby in Jupiter, Florida.
Diaz, 23, last appeared for Springfield on Saturday night, April 26. The designated hitter that evening was pinch-hit for in the sixth inning and has not played since. The right-handed hitter has a line of .307/.321/.520/.841 in his first 76 professional plate appearances in 20 games. Diaz has three home runs and 16 RBI to go with 19 strikeouts and just one walk.
Diaz has a right shoulder strain. An MRI showed no structural damage, according to Kary Booher of the Springfield News-Leader. This may be a continuation of problems Diaz faced after signing with St. Louis in March.
Williams, 24, began the season with Springfield, but was sent down to Palm Beach on April 17 in a series of moves started by the activation of Mark Ellis in St. Louis. In seven Florida State League contests, the right-handed hitting Williams went 6-for-24 (.250), including a triple and a home run. He scored five and drove in four. Earlier with Springfield, he batted .226 in his first 10 games this season.
Caldwell, 22, finished 2013 with Class-A Peoria, but was squeezed out of a roster spot in 2014, opening the season in extended spring training. Overall in 60 games between State College and Peoria last summer, the left-handed hitter logged a line of .265/.353/.344.
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