Drellich: Eduardo Rodriguez moving upward in Red Sox rotation

FORT MYERS — We’ll see how that $30 million elbow goes. Because if David Price’s arm bends the wrong way, the second best left-hander the Red Sox have behind Chris Sale in 2017 should be Eduardo Rodriguez.

There have been plenty of reasons lately to be down on the Red Sox rotation. Not because of a lack of quality — Sale and Rick Porcello may still dominate — but because of the question marks practically everywhere else.

Depth, health, repeat performances. Or a lack thereof.

Rodriguez yesterday afternoon gave reason for some optimism. So too did his late-season performance in 2016 when he had a 3.27 ERA in September.

Combine that with the progress he’s made with his slider and some seemingly…