The 19-year-old Perez debuted in the minors in 2018 and then blossomed in rookie ball the next season, when he batted .268/.349/.512 with 11 home runs and 11 stolen bases across 238 plate appearances. FanGraphs then ranked Perez as the No. 22 prospect in a deep Padres system.
Mateo, 25, was a high-end prospect in his younger days, but he hasn’t been that productive in the minors or the majors over the past couple of seasons. He made his MLB debut in 2020 and batted .154/.185/,269 without a home run in 28 PA.