Astros pitcher Samuel Deduno underwent a precautionary MRI on Tuesday for a right lower back strain, general manager Jeff Luhnow said per the Houston Chronicle.

Deduno, who was placed on the 15-day DL with the injury on Monday, said the discomfort has been in his back since spring training. Deduno is 0-1 with a 6.86 ERA in 21 innings of work this season.

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