The Oakland A's recalled right-handed pitcher Frankie Montas and first baseman/outfielder Matt Olson from Triple-A Nashville. In addition, they Chris Carter has been signed to a minor league contract and assigned to Nashville.
Montas joins Oakland for the second time this year. He was on the A's Opening Day roster and went 1-1 with a 6.91 ERA and .308 opponents batting average in 21 relief appearances before he was optioned to Nashville June 11. The 25-year-old right-hander went 0-1 with a 4.22 ERA in seven games, including six starts, with the Sounds. He pitched four innings or fewer in each of his outings and did not toss more than 69 pitches in any game. Montas struck out 31 batters in 21.1 innings and held the opposition to a .213 batting average, including .167 against right-handers.
Olson reports to Oakland for the fifth time and is batting .184 with four home runs, nine RBI and eight walks in 16 games over his previous four stints. His most recent stay was from June 22 to July 2 when he went 9-for-40 (.225) with all four of his home runs and eight RBI in 10 games. The 23-year-old right-handed hitter is batting .267 with 19 home runs and 51 RBI in 68 games with Nashville. Olson has the best home run to at bat ratio in the Pacific Coast League, hitting one homer per 13.0 at bats.
Carter began the year with the New York Yankees and hit .201 with eight home runs and 26 RBI in 62 games before being designated for assignment on June 23. He previously spent five years in the A's organization after originally being acquired on Dec. 14, 2007 from Arizona in an eight-player trade involving Brett Anderson, Carlos Gonzalez, and Dan Haren. He spent parts of three seasons in the majors with Oakland (2010-12), appearing in 106 games and hitting 19 homers.