Major League Baseball roundup

Louis Cardinals placed All-Star shortstop Aledmys Diaz on the 15-day disabled list and activated third baseman Jhonny Peralta and first baseman/outfielder Brandon Moss, the team announced Tuesday.

St. Louis also added left-hander Zach Duke to the 25-man roster. Duke was acquired from the Chicago White Sox on Sunday.

Left-hander Dean Kiekhefer and outfielder Randal Grichuk were optioned to Triple-A Memphis.

Diaz was injured on Sunday when he was hit on the right thumb by a pitch. No break was discovered during the initial examination but additional X-rays performed on Monday confirmed a hairline fracture.

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The Atlanta Braves placed right-hander Julio Teheran on the 15-day disabled list with a right lat strain.

Outfielder Matt Kemp, who was acquired from San Diego on Saturday, will fill the roster spot.

Teheran (3-9, 2.81 ERA) exited a start against Colorado on July 22 after scattering three hits in four scoreless innings with right lat tightness.

The 25-year-old Colombian labored through five innings in his next outing against Philadelphia on Saturday, taking the loss after permitting three runs and five hits.

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St. Louis Cardinals minor-league prospect Luke Doyle was suspended 100 games for his refusal to take a drug test.

Doyle, a second baseman for Johnson City of the Appalachian League, had been suspended for 50 games in March for testing positive for amphetamines, a banned stimulant.

The Office of the Commissioner of Baseball also announced that Drake Britton, a left-handed minor-leaguer for the Detroit Tigers, was suspended 50 games after testing positive for amphetamines.