The Tampa Bay Lightning are just hours removed from their Stanley Cup loss to the Chicago Blackhawks, but that didn’t stop Don Cherry from going on a Twitter rant Tuesday.

The host of Coach’s Corner used 13 tweets to vent about the misuse of Steven Stamkos throughout the post-season by Lightning head coach Jon Cooper.

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Cherry, a former NHL head coach with the Boston Bruins and the now-defunct Colorado Rockies, was displeased with Cooper’s usage of Stamkos in multiple situations during the Stanley Cup Final.

Stamkos did not register a goal in the six-game series with Chicago, only finishing with one assist. In 26 post-season games this season, Stamkos accumulated seven goals and 11 assists with a plus-2 rating.

Cherry offered a warning to the Lightning, saying that if they don’t figure out how to better utilize their best player, he will strongly consider leaving as a free agent when his contract expires after the 2016 season.