Peterka has an undisclosed injury and is regarded as day-to-day, Catherine Bogart of Utah's official site reports Saturday.
Utah acquired Peterka from Buffalo and signed him to a five-year, $38.5 million contract over the summer. The 23-year-old isn't expected to be unavailable for long. He will likely open 2025-26 with a top-six spot and could serve on the first power-play unit. Peterka had 27 goals and 68 points in 77 outings with Buffalo last year.