Duffy (shoulder) will be sent to Kansas City for an MRI, Vahe Gregorian of the Kansas City Star reports. He's expected to miss at least one start, even in the best-case scenario. According to Royals manager Ned Yost, Duffy simply couldn't get loose prior to Saturday's start. He left after throwing one pitch, and the expectation is that Liam Hendriks will fill in for Duffy as long as the left-hander is unavailable.