Gravel was reassigned to AHL Milwaukee on Friday.
Gravel posted an assist and went plus-3 in Thursday's 4-1 win over the Stars.
Gravel was promoted from AHL Milwaukee on Thursday, Nick Kieser of 102.5 ESPN Nashville reports.
Gravel was placed on waivers for the purpose of reassignment to AHL Milwaukee, Elliotte Friedman of Sportsnet reports.
Gravel was reassigned to AHL Milwaukee on Saturday.
Gravel was elevated from AHL Milwaukee on Thursday.
Gravel agreed to a two-year, two-way contract extension Friday.
Gravel was put on waivers Saturday, according to Chris Johnston of TSN.
Gravel was reassigned to AHL Milwaukee on Monday.
Gravel was recalled from AHL Milwaukee on Saturday.