ATLANTA -- In order to find their latest outfield replacement, the Cardinals bypassed candidates at higher levels in their system and instead zeroed in on Magneuris Sierra, who was stilling getting his feet wet with Class A Advanced Palm Beach.
A month after opening the season in the Florida State League, Sierra -- ranked as the Cards' No. 7 prospect by MLBPipeline.com -- was patrolling center field at SunTrust Park on Sunday. At 21 years and 30 days old, Sierra is the youngest Cardinals position player to make his big league debut since Miguel Mejia did it 10 days after his 21st birthday in 1996.