Rantanen didn't suit up for AHL San Antonio in their game Sunday due to an upper-body injury.
EDGE Analysis
The No. 10 overall pick has been skating in the AHL since late October, after he was held off the score sheet in his first six games at the NHL level. It's not clear how severe Rantanen's injury might be, but he wasn't expected to rejoin the Avalanche in the immediate future anyway.