The Texas Rangers optioned outfielder Willie Calhoun and catcher Sam Huff to AAA Round Rock after today’s game. Active rosters were expanded to 28 from Opening Day through May 1 due to the shortened spring training this year (thanks, lockout), and so the moves were made to get the Rangers down to 26 on the active roster.
Huff had been called up to fill in while Jonah Heim was on the paternity list. Heim returned to action today, but Kolby Allard was sent down instead of Huff, so you can interpret this as Allard being one of the two players who was dropped to get the roster to 26.