Frk agreed to terms on a two-year contract with Swiss club SC Bern on Monday.
St. Louis has put Frk on waivers, reports Sportsnet's Chris Johnston.
Frk (lower body) is listed on the Blues' projected lineup for Thursday's game versus the Blue Jackets, Lou Korac of NHL.com reports.
Frk sustained a lower-body injury against Dallas on Monday, Lou Korac of NHL.com reports.
Frk signed a one-year, two-way contract with the Blues on Friday.
Frk was reassigned to AHL Ontario on Sunday.
Frk was recalled from AHL Ontario on Tuesday.
Frk was shipped down to the minors Monday.
Frk was promoted from AHL Ontario on Sunday.
Frk was reassigned to AHL Ontario on Sunday, per CapFriendly.