Holliday had to leave Monday's home game against the Los Angeles Dodgers in the eighth inning after the moth flew into his ear and became lodged in the canal.
Team trainers said the left fielder was taken into a dark room on the chance the moth would seek light and exit the ear on its own, MLB.com reported.
That did not work. Trainers then used tweezers and removed the insect, which was still alive -- and Holliday decided to keep it, the report said.
Holiday said he was feeling fine.
A team official said he was not sure if Holliday would see a physician to determine if the moth caused damage while wedged in his ear.
The Dodgers won 2-1.
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