The Padres acquired Lockridge from the Yankees on Tuesday in exchange for reliever Enyel De Los Santos and minor-league Thomas Balboni.
Lockridge was a fifth-pick in the 2018 First-Year Player Draft and is hitting .295 with 34 stolen bases in 72 games at the Triple-A level this season. The 27-year-old doesn't offer much power, as he has no homers and just 17 extra-base hits.