Freicer Perez was signed by the New York Yankees as part of their 2014 international signing class out of Santiago de los Caballeros, Dominican Republic.

He was part of the same signing class that included Wilkerman Garcia and Hoy Park.

2015

The Yankees sent Perez to the Rookie-level Dominican Summer League Yankees 1 team to start off his professional career.

Perez pitched capably to a 7-3 record with a 3.23 ERA in 15 games, all of which were starts. He pitched 69 and two-thirds innings allowing 66 hits and striking out 68 batters. He ended up with a 1.191 WHIP.

2016

The Yankees bumped Perez up to the short-season A Staten Island Yankees. Perez posted a 2-4 record in 13 starts and put up a 4.47 ERA. He struggled with his control, and he walked 25 batters in 52, and one-third innings pitched. He did strike out 49 batters as well.

2017

The Yankees continued to challenge Perez and bumped him up to the next level of the system. Perez pitched the entire season for the Charleston RiverDogs of the low A South Atlantic League.

Perez turned the corner and put up a 10-3 record with a 2.84 ERA. He struck out 117 batters in 123 and two-thirds innings while allowing just 96 hits. He was considered the ace of the staff and turned heads with his velocity and control. He struggled in April but turned around his season by breaking out an effective slider in May, to go with his 100 miles per hour fastball, which made him extremely hard to hit.