Jarnkrok (lower body) was placed on long-term injured reserve Monday.
Jarnkrok dealt with a lower-body injury over the final few weeks of training camp, and the issue will force him to miss several weeks to begin the regular season. He was in and out of the lineup during the preseason, but his time on long-term injured reserve should allow him to fully recover before making his season debut. Once he's healthy, the 33-year-old will likely fill a top-six role for Toronto.