The Pirates announced that Triolo was scratched from the lineup ahead of Sunday's game against the Yankees due to low back discomfort.
The Pirates are viewing Triolo as day-to-day, but he could be a candidate to land on the injured list if he fails to make much meaningful progress by the middle of the week. Isiah Kiner-Falefa had been scheduled to receive a day off Sunday but was thrust into the lineup at shortstop as a result of Triolo's late scratch.