Tom Brady Admits Tuck Rule Play 'Might' Have Been A Fumble, Woodson Responds

After 20 years of endless debate, Tom Brady is finally caving into the possibility that the controversial "tuck rule play" from the Patriots' 2001 playoff game "might have" been a fumble ... and naturally, the Raiders had something to say.

The 44-year-old took to social media to make the revelation with the help of none other than Justin Bieber on Thursday ... admitting there's a chance he may have gotten away with a fumble that the refs didn't call in the classic AFC Divisional Round game.

Here's the deal -- Bieber posted a TikTok asking his followers to tell him something honest (to promote his new single called, you guessed it, "Honest") ... which opened the door for Brady to make the public admission.

"The Tuck Rule game against the Raiders might have been a fumble," Brady said in the vid ... adding, "Keep this on the down-low please" in the accompanying tweet.

Remember, the Raiders were leading 13-10 with 1:47 left in the 4th quarter when Brady -- who started the season as Drew Bledsoe's backup -- dropped back to make a pass as defensive back, Charles Woodson, was blitzing off the edge.

Brady "lost the ball," but the refs ruled that because his arm was going forward, the play was an incomplete pass -- much to the dismay of Raiders fans.

The rest was history ... as the Pats went on to defeat the Raiders in overtime, 16-13, then march to the Super Bowl, where they beat the Rams, 20-17.

The Raiders' Twitter account had a hilarious reaction to TB12's vid ... saying, "Knew it."

While Brady has seemingly softened his stance on the play, he still believes the refs probably made the right call.

"I said might. Such a tough call. No choice but to respect the official's probably correct decision."