The Cincinnati Reds are promoting 20th-ranked prospect Luis Mey from Triple-A Louisville, according to Hector Gomez. Mey has a 4.00 ERA with nine strikeouts and seven walks over 10 games this season. The flamethrower is known for his ability to routinely throw over 100 mph and he threw a pitch 103.2 mph earlier this season.

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.