When Tatum went down

The alarming possibility the Celtics are done

With 3:07 left in the fourth quarter, Celtics star Jayson Tatum took to the floor after a non-contact injury of his lower right leg, after which he appeared to be in alarming pain. MRI results are expected any time. DANIELLE PARHIZKARAN/BOSTON GLOBE/GETTY IMAGES

HENRY

I’m probably getting way ahead of myself here, but I feel like everything quite probably just changed forever in Boston.

This is a VERY expensive team, and will be even more expensive in the future. Al Horford is 38, Jrue Holiday is 34, Derrick White is 30.

27 is about the oldest age that NBA stars peak, and the Celtics don’t have a single key rotation player who is younger than that. It has long seemed likely to me that it’s only a matter of time before the people who count the beans in Boston find ways to jettison a big contract or two to avoid the nastiest backwaters of the luxury tax. Boston’…