Diamondbacks' Merrill Kelly Scratched from BP with Back Tightness

Merrill Kelly will not throw his scheduled live batting practice session Saturday due to mid-back tightness, as reported by Nick Piecoro of The Arizona Republic. The veteran right-hander is set to undergo further testing within the next 24 hours, with a status update expected afterward. Kelly, who has already been named the Arizona Diamondbacks' Opening Day starter, is battling the back issue, which has led to the cancellation of his previously scheduled session.