When two of the greatest Celtics of all time speak, you listen. Paul Pierce and Kevin Garnett recently broke down what went wrong for Boston in their heartbreaking Game 7 loss to the Philadelphia 76ers, and their verdict might surprise you. It wasn't just about cold shooting or questionable coaching—it was about a mental misstep that doomed the team before tip-off.

The Celtics stumbled through their final three games, battling injuries and inconsistency. Jayson Tatum's untimely injury and Joe Mazzulla's puzzling rotations didn't help. But Pierce and Garnett believe the real damage was done behind the scenes, in how the team handled Tatum's availability.

After Tatum exited Game 6 on Thursday, the message was clear: he'd play in Game 7. Friday brought confirmation from Tatum himself, Mazzulla, and the injury report. Then, hours before Saturday's decisive matchup, everything changed. Tatum's status was downgraded to questionable, and he was shockingly ruled out just before the game.

"They made a long-term decision," Pierce said on the latest episode of "Ticket & The Truth." And while protecting a star's future is smart, the timing left his teammates in the lurch.

Garnett didn't hold back. "You about to go scrap, and one of your best scrappers ain't here. That's a blow to the morale. That's a blow to the camaraderie. You need all hands on deck."

Pierce agreed, adding, "Just psychologically... it is devastating."

These are two legends who've lived through countless Game 7 battles. They know the mental preparation required, and they believe Boston's last-minute decision robbed the team of a chance to adjust. If the plan was always to sit Tatum, the Celtics should have been upfront, giving everyone time to reset their mindset. Instead, the uncertainty created a morale hit that carried onto the court.

For Celtics fans and players alike, it's a tough lesson in the importance of communication—especially when the stakes are at their highest.