What happened: Infielder Joshua Kuroda-Grauer has reached the Major Leagues with the Athletics and notched his first big league hit. The club marked the moment as one of its young middle infielders stepped into the everyday picture.

Why it matters: The Athletics continue feeding homegrown talent into the lineup as they build around a youthful core in Sacramento. Every promotion gives the organization a longer evaluation window on the players it hopes will anchor its next competitive window.

What to watch: Watch whether Kuroda-Grauer earns regular playing time and how he adjusts to big league pitching over his first extended look.