Athletics placed RHP Adrián Martínez on the 15-day injured list, retroactive to April 23, with a right elbow strain.
The 25-year-old hurler has -- like most of the Athletics pitchers this season -- struggled through his first 17 1/3 innings on the season, posting a miserable 6.75 ERA, 1.39 WHIP and a 14/5 K/BB ratio. No word yet from the club on how long he’ll be shelved for. Sam Long -- who was acquired from the Giants late Sunday night, will join the active roster to take his place.