The promising, young arms in the Cincinnati Reds farm system are starting to deliver on their MLB potential. Luis Mey was the latest example of that, and he turned more than a few heads in his debut.

With the Reds demoting former closer Alexis Díaz on Thursday, the club promoted one of professional baseball's hardest-throwing pitchers. Right-handed reliever Luis Mey was recalled from Triple-A Louisville and made his big league debut during a 9-1 win over the Cardinals.

Cincinnati Reds prospect and reliever Luis Mey struck out the first batter he faced in his MLB debut, and pitched a clean ninth inning