Barreto went 3-for-4 with five RBI from a pair of home runs in Triple-A Nashville's win over Memphis on Sunday.
Barreto has been positively tearing the cover off the ball for the Sounds over the last two weeks. The versatile prospect has six multi-hit efforts during that span, including nine extra-base hits (five doubles, four homers) and nine RBI. His season line at Triple-A is up to an impressive .304/.388/.609, and it's hard to argue he needs further work in the minors at this point. He should get a promotion to the majors whenever the A's can find a way to get him regular playing time, but Jed Lowrie's bat and Marcus Semien's glove are currently standing in the way.