Mateo stole a base as a pinch runner in Saturday's loss to the Dodgers.
Mateo took over on the basepaths for Luis Campusano in the ninth inning after the latter drew a walk. Mateo stole second to get into scoring position, but the Padres' subsequent hitters couldn't bring him home. The steal was Mateo's first this season. He is slashing .227/.346/.318 through 26 plate appearances.