Jayson Tatum's loyalty won't be with Boston for the Stanley Cup Final.

The Celtics forward will be cheering on the St. Louis Blues when they face off against the Boston Bruins. He made that clear with his reaction to the Blues' Game 6 victory over the Sharks to clinch the Western Conference championship:

In case you haven't gotten the hint by now, Tatum is a St. Louis native. So he at least has a valid excuse to root against the city he plays in.

Even so, the 21-year-old will be the enemy in Boston for at least the next couple weeks. The Stanley Cup Final gets underway Monday, May 27 at 8 p.m.

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