Rangers starting pitcher Yu Darvish is headed back to the disabled list. USATSI

Just three starts into his return from Tommy John surgery, Rangers right-hander Yu Darvish is headed back to the disabled list ...

The "nothing significant" part is certainly a key takeaway, but this is still a concerning turn of events. Any time a pitcher's shoulder is involved, it's concerning, but that's especially the case with Darvish and his health history. Speaking of which, this is the sixth time he's been on the DL. Previously, Darvish battled neck and shoulder tightness in 2013 and 2014.

This season, Darvish has pitched to a 2.87 ERA and 3.17 K/BB ratio in 15 2/3 innings. For his career, he has an ERA+ of 129 across 86 major-league starts.

To take Darvish's spot on the active roster, the Rangers recalled lefty Alex Claudio.