Mason Barnett allowed two runs in 3 1/3 innings and took the loss against the Twins on Saturday.
Barnett gave up four hits, walked one and struck out two. The 25-year-old had been starting exclusively at Triple-A, but the Athletics opted to have him follow an opener against the Twins on Saturday. Barnett came in during the third inning. He was able to hold the Twins off the scoreboard until the sixth inning when a two-out two-run Alan Roden single accounted for the only runs in the game. Barnett is lined up to face the Red Sox at home next Thursday.