Athletics' Zach Jackson: To IL with flexor strain

Jackson was placed on the 15-day injured list by the Athletics on Friday with a right flexor tendon strain.

It's an injury which typically results in longer than a minimum stay on the IL. Jackson was part of the closer mix in a messy A's bullpen situation but now figures to be out of commission for at least a month or so. Not a single active member of the bullpen has recorded a save this season.