Oller elected free agency Friday, Ari Alexander of KPRC 2 Houston reports.
Oller is expected to pursue opportunities in Nippon Professional Baseball and the Korea Baseball Organization. The 30-year-old holds a 6.54 ERA over 36 appearances (23 starts) across parts of three seasons at the major-league level, most recently posting a 5.31 ERA over eight starts with the Marlins in 2024.