The Tigers optioned Jimenez to Double-A Erie on Tuesday, Evan Woodbery of MLive.com reports.
Along with Jimenez, fellow pitchers Casey Mize and Eduardo Paredes were assigned to minor-league camp, reducing the team's big-league contingent to 56 men. Jimenez was never viewed as a serious candidate for an Opening Day roster spot after pitching exclusively at High-A Lakeland last season. He turned in a 3.42 ERA and 1.64 WHIP across 50 innings, all in relief.