OAKLAND, Calif. – The Oakland A’s placed left-handed pitcher Reymin Guduan on the 10-day injured list retroactive to May 26 with a strained right groin and recalled right-handed pitcher Jordan Weems from Triple-A Las Vegas, the club announced today. The A’s also reinstated left-handed pitcher A.J. Puk from the injured list and optioned him to Las Vegas.

This is the second stint on the injured list for Guduan this year as he was previously sidelined from April 6 to 19 with a sprained left thumb. He compiled a 1.54 ERA in eight games since his return and has a 6.28 ERA and .345 opponents batting average in 11 relief appearances overall this year.

Weems joins the A’s for the third time this year as he was previously with the club from April 6 to 20 and May 2 to 11. He has a 6.23 ERA and a .133 opponents batting average in five relief appearances with Oakland. The 28-year-old right-hander also has a 4.91 ERA in four relief appearances with Las Vegas. He has not walked a batter and struck out six while allowing two runs on four hits in 3.2 innings.

Puk was recalled from the A’s alternate site on April 5 and pitched 3.1 scoreless innings that day against the Dodgers, allowing a hit and three walks while striking out four. He was placed on the 10-day injured list April 8 retroactive to April 6 with a strained left biceps. Puk began a rehab assignment with Las Vegas on May 11 and is 1-1 with a 14.40 ERA in five relief appearances with the Aviators. In 5.0 innings, he has allowed eight runs on 11 hits, including three home runs. He has walked one and struck out nine.

OAKLAND, Calif. – The Oakland A’s reinstated designated hitter Mitch Moreland from the 10-day injured list and optioned outfielder Luis Barrera to Triple-A Las Vegas, the club announced today.

Moreland was placed on the IL May 18 retroactive to May 15 with an inflamed costochondral junction of his left rib. He was hitting .237 with four home runs and 15 RBI in 31 games at the time of the injury and had hit safely in each of his last five contests (6-for-18, .333). Moreland, who has started 23 games at designated hitter and five at first base, did not have a rehab assignment.

Barrera, who was recalled on May 18 when Moreland was placed on the IL, went 1-for-5 (.200) in four games in his Major League debut. He made one start in left field last Saturday at Los Angeles (AL) and singled off Aaron Slegers in the fourth inning for his first big league hit. Barrera is hitting .349 with two home runs and seven RBI in 11 games with Las Vegas.