Perez was optioned to Triple-A on Wednesday, MLB.com's Mark Bowman reports.
It was probably only a matter of time before his rotation spot was in jeopardy, and now that is becoming a reality. Aaron Blair, who is coming off his best Triple-A start to date on Tuesday, and Mike Foltynewicz would both be on enough rest to jump into the rotation for Sunday's start against the Mets. Perez could serve as a spot starter going forward, but it seems unlikely that he will see a prolonged run of big league starts this season.