Kral was designated for waivers by the Penguins on Friday, Elliotte Friedman of Sportsnet reports.
Kral (leg) is set to play in Thursday's preseason game against Columbus, the team announced Wednesday.
Kral (leg) isn't set to play Saturday against Detroit or Sunday versus Ottawa.
Kral was labeled day-to-day with a lower-body injury Wednesday, Wes Crosby of NHL.com reports.
Kral inked a one-year, two-way deal with Pittsburgh on Tuesday.
Kral is set to become an unrestricted free agent Saturday because Toronto didn't provide him with a qualifying offer, Terry Koshan of The Toronto Sun reports.
Kral was reassigned to AHL Toronto on Thursday, per CapFriendly.
Kral will make his NHL debut against LA on Saturday, Mark Masters of TSN.ca reports.
Kral was called up from AHL Toronto on Tuesday, per CapFriendly.
Kral was returned to AHL Toronto on Saturday.