Bill Simmons ponders whether the Celtics title window is closing

Well that's a somber thought. The Celtics have two young stars and this seems like an overreaction to going down 3-2 to the 76ers. Al Horford is the only core player long in the tooth, so realistically speaking the Celtics have the personnel to remain contenders for several more years.

That said, being a contender and winning a title are two separate things, and you never want to give away a solid chance at winning one. The Celtics blew one of those opportunities last season after going up 2-1 on the Warriors and it remains to be seen whether they will come back in this Philly series where they should have won more than just two out of the first four games.